Erin Guy Castillo

(209) 952-1992

Erin Guy Castillo

Name partner Erin Guy Castillo is an experienced trial lawyer, handling exclusively civil trials and appeals in a wide variety of matters, including business disputes, real estate, probate and trust litigation, personal injury and property damage. She is a dedicated advocate for her clients, ranging from large companies to small businesses and individuals. Erin has served as lead trial counsel in several jury and court trials, including prosecuting cases to verdict or settlement reaching more than a million dollars. She has also successfully defended clients at trial and on appeal. Erin is admitted to practice in all California state courts and the United States District Court for the Eastern District of California.

A native of Stockton, Erin is actively involved in several industry and community organizations. In addition to serving on the Board of Governors of the San Joaquin County Bar Association, she previously chaired the organization’s Women Lawyers Section and co-chaired the Young Lawyers Section, both of which work to promote the legal profession, administer a mentorship program and support local charities. Through the Bar, Erin has organized and moderated several continuing education programs for local attorneys, created the mentorship program and published many articles in its magazine, Across the Bar. Erin received the Bar Association’s first ever Outstanding Young Lawyer Award. She also serves on the Executive Committee for the Consuelo M. Callahan Inn of Court.

Erin’s dedicated community work includes serving as vice-president of the Mary Graham Children’s Foundation, a nonprofit providing support and scholarships to foster children who have “aged out” of the system. She is a long-time volunteer with the First Impressions program, where she teaches fifth grade students about the judiciary branch though a mock trial program. Erin is also a 2015 graduate of Leadership Stockton and serves as a Commissioner on the Charter Review Advisory Commission.


University of San Francisco, School of Law, J.D., cum laude, 2007
    Associate Editor, Staff Member, Maritime Law Journal
California State University, Fullerton, B.A., Sociology, cum laude, 2003


  • President-Elect, Former Secretary/Treasurer and Chair of Mentorship Committee, Board of Governors, San Joaquin County Bar Association
  • State Bar of California
  • American Bar Association, Northern California Young Lawyers Delegate, 2013
  • Executive Committee, Judge Consuelo M. Callahan Inn of Court
  • President, Board of Directors, Finance Committee, Outreach Committee and Co-chair of Kids Art Auction, Mary Graham’s Children Foundation
  • Mock Trial Teacher, First Impressions Program
  • Judge, San Joaquin County High School Mock Trial Competition
  • Leadership Stockton, Class of 2015
  • Commissioner, Stockton Charter Advisory Committee, 2015-2016
  • Board of Directors, Leadership Stockton Alumni Association
  • Government Relations Council, Greater Stockton Chamber of Commerce


  • Rising Star, Northern California Super Lawyers
  • First recipient of the Outstanding Young Lawyer Award, San Joaquin County Bar Association
  • Most Distinguished Class Member, Leadership Stockton
  • 40 Under Forty, San Joaquin Lifestyles


Should the Courts Be Married to CACI, or is it Time for a Trial Separation?, Across the Bar, 4th Quarter, 2014
Under Oath, Across the Bar, 4th Quarter, 2014
Q&A: If You Could Change One California Law, Which would it be and Why?, California Lawyer, May 2013
Year in Review for Young Lawyers, Across the Bar, 2012, 2013
Year in Review for Women Lawyers, Across the Bar, 2011, 2012, 2013

Speaking Engagements:

Networking and Marketing for Young Lawyers, San Joaquin County Bar Association, Women Lawyers Section, October 2014
Enforcing Your Judgment from Abstracts to the UCC, Masters Series Presentation, San Joaquin County Bar Association, 2013
Pre-Judgment Remedies, Masters Series Presentation, San Joaquin County Bar Association, 2012