Photo of Attorney Marianne Barth

Marianne Barth

  • Of Counsel


Marianne Barth is an experienced attorney whose practice is devoted to business and civil litigation, including extensive litigation in high asset marital dissolution cases. For more than 30 years, Ms. Barth has handled complex litigation involving complex business matters, product liability matters, and family law matters. She has represented physicians, hospitals and other health care professionals in professional malpractice, licensing, regulatory, administrative matters and business claims.

Ms. Barth also focuses her practice on family law, handling divorces involving family owned and professional businesses, support and child-related matters. Her years of experience handling complex civil and business litigation has given her the experience, judgment and expertise to understand and successfully resolve the complex financial, business and emotional issues that present in divorce cases. Having handled many complex litigations involving significant financial matters, Marianne brings a very unique approach to the divorce and family law cases she handles.

Ms. Barth has the highest rating (AV) for both ethics and legal ability from Martindale Hubbell, the most trusted legal resource. She has earned a solid reputation amongst clients and judges as a passionate and tenacious advocate, both inside and outside of the courtroom.

Marianne began her career in San Diego, CA where she practiced for 28 years at 3 of San Diego's premier litigation firms. She has been recognized by the San Diego Business Journal as one of San Diego's Influential Women and by San Diego Magazine as a Top Lawyer in Family Law. Marianne has called Austin her home for the last few years.

Ms. Barth is a graduate of Villa Maria College and California Western School of Law. She is admitted to practice in both state and federal courts in both California and Texas. She successfully has tried numerous jury trials to verdict as well as administrative law matters.

Practice Areas

  • Civil & Business Litigation
  • Commercial & Residential Real Estate
  • Construction
  • Securities Litigation & FINRA Arbitration
  • Family Law


  • California Western School of Law, San Diego, California
    • J.D. - 1988
  • Villa Maria College
    • B.A. - 1979

Bar Admissions

  • California, 1989
  • Texas, 2019

Professional Associations

  • State Bar of California, Member
  • San Diego County Bar Association, Member, 1990 to 2019
  • American Bar Association, Member
  • Association of Business and Trial Lawyers, 2004 to 2007
  • Superior Court of California, Judge Pro Tem
  • San Diego County Oxy Task Force
  • American Inns of Court, Louis M. Welsh Chapter
  • Supreme Court of the State of California, 1989
  • San Diego Family Law Bar Association, 2013 to 2019
  • San Diego County Bar, Ethics Committee, 2017 to 2019
  • San Diego Inn of Court, 1992 to 1998
  • Supreme Court of the State of Texas, 2019
  • Austin Bar Association, Family Law Section
  • Travis County Women Lawyer's Association
  • Williamson County Bar Association
  • State Bar of Texas, Business Law Section, Construction Law Section, Family Law Section


  • Martindale-Hubbell Rating of AV Preeminent
  • San Diego Magazine as one of San Diego's Top Lawyers in Family Law
  • Recipient, Tribute to Women & Industry (TWIN) Award, 2017
  • Recipient, Influential Women in Business Award, 2018
  • Lieutenant, U.S. Public Health Service
  • Prescription Drug Abuse Task Force Member

Certified Legal Specialties

  • Certified Specialist in Family Law, State Bar of California Board of Legal Specialization, 2018

Past Positions

  • McInnis, Fitzgerald, Rees and Sharkey, Associate then Partner
  • Higgs, Fletcher and Mack, Partner
  • Marianne Barth, APC, Owner
  • Seltzer Caplan McMahon Vitek, Of Counsel

Business And Civil Litigation Representation That’s As Confident As Texas