Judge Michael J. Gassner: Professional Background and Legal Expertise

San Bernardino County Superior Court, Department S55

Biography

Overview

The Hon. Michael J. Gassner is a judge for the San Bernardino County Superior Court in California[1]. Gassner was appointed to the bench by former Governor Jerry Brown on January 26, 2017[2].

While on the bench, his assignments have included family law matters[3]. He served as supervising family law bench officer from 2007 to 2021[5].

Educational background

Gassner earned a bachelor's degree in history from the University of La Verne in 1978. At the University of La Verne College of Law, he completed a J.D. in 1981. He was admitted to the State Bar of California (1983)[4].

Career history

After completing law school, Gassner entered private practice at Gassner & Gassner (1981 to 1996). There, he practiced with his parents, Beverly and Larry Gassner, in what local coverage described as a family-law dynasty in the Inland Empire. His work focused on family and juvenile law, and during that period he became a Certified Family Law Specialist through the State Bar of California Board of Legal Specialization. In 1996, he became a court commissioner for the San Bernardino County Superior Court.

His committee service included nine years on the Judicial Council's Family and Juvenile Law Advisory Committee and work on the California Center for Judicial Education and Research Family Law Curriculum Committee. In 2008, the Judicial Council appointed him to the Elkins Family Law Task Force. At the local level, he chaired the Family Law Committee of the San Bernardino County Superior Court for six years.

His honors have included the Judicial Officer of the Year award from the State Bar of California's Family Law Section (2001). He also received the Distinguished Jurist Award from the Southern California Chapter of the American Academy of Matrimonial Lawyers.

Personal life

Outside the courtroom, Gassner has been involved in youth soccer through the American Youth Soccer Organization as a nationally certified soccer coach, an advanced coach trainer, and the Section One coach trainer.

Gassner is registered as a Democrat[6].

References

[1] San Bernardino Superior Court — Judicial Profiles
[2] Governor of California Press Release (January 26, 2017)
[3] San Bernardino Superior Court — Judicial Assignments
[4] State Bar of California Licensee Detail
[5] Daily Journal — Talent for Reading Between Lines Saves Time and Trials
[6] Daily Journal — Michael Gassner

Recent Cases by Hon. Michael J. Gassner

BLANCA HERNANDEZ vs. PEDRO MORA Print

On October 23, 2026 a petition for custody and support of a minor child case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 23, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Petition for Custody and Support of a Minor Child

Practice Area

Family

Matter Type

Custody,Visitation

Case Last Refreshed

Oct 24, 2026

MIRNA GARCIA -v- ROSENDO ALVAREZ Print

On October 23, 2026 a dissolution w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 23, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/ Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 24, 2026

SOPHIA MACIAS -v- ULISES ALFARO Print

On October 23, 2026 a dv prevention w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 23, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

DV Prevention w/o Minor Children

Practice Area

Family

Matter Type

Domestic Violence

Case Last Refreshed

Oct 24, 2026

HEATHER ASHLEE RODRIGUEZ -v- JOSHUA AARON RODRIGUEZ Print

On October 22, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 22, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 22, 2026

Ivan Miller -v- Linda Grissom Print

On October 21, 2026 a dv prevention w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 21, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

DV Prevention w/o Minor Children

Practice Area

Family

Matter Type

Domestic Violence

Case Last Refreshed

Oct 22, 2026

Gabrielle Miller -v- Kyle Miller Print

On October 21, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 21, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 22, 2026

Ramona Ortega -v- Jose Ortega Castillo Print

On October 20, 2026 a dissolution w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 20, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/ Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 20, 2026

ISAAC ALMANZA MELENDEZ -v- NORA ALMANZA Print

On October 19, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 19, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 19, 2026

Julian Williams -v- Rocio Avila Williams Print

On October 19, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 19, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 19, 2026

Jovana Magallon -v- Javier Sullon Print

On October 16, 2026 a dv prevention w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 16, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

DV Prevention w/ Minor Children

Practice Area

Family

Matter Type

Domestic Violence

Case Last Refreshed

Oct 16, 2026

VERONICA HOYOS -v- ANTHONY MENDOZA Print

On October 16, 2026 a dv prevention w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 16, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

DV Prevention w/ Minor Children

Practice Area

Family

Matter Type

Domestic Violence

Case Last Refreshed

Oct 17, 2026

FRANCISCO TELLEZ -v- MARISA MUSSELMAN Print

On October 16, 2026 a dissolution w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 16, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/ Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 17, 2026

Maria Denis -v- Samuel Denis Denis Print

On October 16, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 16, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 17, 2026

JUAN AGUILAR -v- LARAMY RUIZ PORY Print

On October 15, 2026 a dv prevention w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 15, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

DV Prevention w/o Minor Children

Practice Area

Family

Matter Type

Domestic Violence

Case Last Refreshed

Oct 16, 2026

Arturo Camacho Perez -v- Herika Juarez Perez Print

On October 15, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 15, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 17, 2026

VILANEY SULLIVAN -v- RAUL GARCIA Print

On October 15, 2026 a custody order - juvenile case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 15, 2026

Status

Judgment (Other)

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Custody Order - Juvenile

Practice Area

Family

Matter Type

Custody,Visitation

Case Last Refreshed

Oct 22, 2026

Izzaiah Hernandez vs. Elizabeth Valdez Print

On October 15, 2026 a petition for custody and support of a minor child case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 15, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Petition for Custody and Support of a Minor Child

Practice Area

Family

Matter Type

Custody,Visitation

Case Last Refreshed

Oct 16, 2026

PAOLA GODOY -v- OSWALD AREVALO ZUNIGA Print

On October 13, 2026 a dv prevention w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 13, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

DV Prevention w/ Minor Children

Practice Area

Family

Matter Type

Domestic Violence

Case Last Refreshed

Oct 14, 2026

JAMIE CALLIES -v- ADRIAN CALLIES Print

On October 13, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 13, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 15, 2026

JAEL ZARAGOZA -v- RICHARD ZARAGOZA Print

On October 12, 2026 a dissolution w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 12, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/ Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 12, 2026

Delia Flores -v- Elfuego Flores Print

On October 12, 2026 a dissolution w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 12, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/o Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 13, 2026

Noely Nava -v- Pedro Bracho Print

On October 9, 2026 a dissolution w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 09, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/ Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 09, 2026

GRECIA GONZALEZ -v- LUIS CARRILLO RAMIREZ Print

On October 9, 2026 a dissolution w/ minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 09, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

Dissolution w/ Minor Children

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 10, 2026

Tyeisha Frields -v- Andre Ross Print

On October 9, 2026 a dv prevention w/o minor children case was filed in the jurisdiction of San Bernardino County. Judge Michael J. Gassner presiding.

Filed

Oct 09, 2026

Status

Active

Judge

Hon. Michael J. Gassner 👉 Discover key insights by exploring more analytics for Michael J. Gassner

Court

Superior

County

San Bernardino County, CA

Case #

(Subscribe to View)

Court Category

DV Prevention w/o Minor Children

Practice Area

Family

Matter Type

Domestic Violence

Case Last Refreshed

Oct 10, 2026

Discover if Hon. Gassner is the right judge for your case based on their ruling history.

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About

Michael J. Gassner
Current Appointment San Bernardino County Superior Court, Department S55	San Bernardino County Superior Court, Department S55
Education J.D., University of La Verne College of Law - 1981 Bachelor's degree, University of La Verne - 1978	J.D., University of La Verne College of Law - 1981 Bachelor's degree, University of La Verne - 1978