- Santa Monica Bar Association
- President
- Entertainment Law Section, Chair
- Secretary
- Board of Trustees, Elected Member
Jon Pfeiffer is actively involved in the community. Mr. Pfeiffer has served as officer of and chaired numerous committees for the following organizations:
- Los Angeles County Bar Association
- Trial Attorney Project, Chair
- Board of Trustees
- Barristers Executive Committee
- Bench and Bar Relations Committee, Co-chair
- Community Law Week, Co-chair
- State Bar Conference of Delegates, Delegate
- Section on Litigation, Member
- Education Committee, Co-chair
- American Bar Association
- Task Force on Entertainment Law and ADR
- Section on Litigation
- Beverly Hills Bar Association
- Entertainment Law Section
- Los Angeles County Superior Court
- West District Civil Advisory Committee
- State Bar of California
- Section on Litigation
- Viewpoint School
- Upper School Mock Trial Team, Legal Coach
- Varsity Football Booster Club, Co-founder
- Webster Elementary School
- School Site Council
