Capes Sokol attorneys and staff participate in a wide range of local, regional and national legal organizations, including:
- American Academy of Matrimonial Lawyers
- American Arbitration Association
- American Association for Justice
- American Bar Association
- Arkansas Alumni Association
- Bar Association of Metropolitan St. Louis (BAMSL)
- Commercial Real Estate Women (CREW), St. Louis Chapter
- Federal Bar Association
- Illinois Bar
- Missouri Association of Criminal Defense Lawyers (MACDL)
- Missouri Association of Trial Attorneys
- Missouri Bar
- Missouri Chapter of the Federal Bar Association
- Missouri Commission on Judicial Resources
- Missouri Judicial Commission on Retirement, Removal & Discipline of Judges
- Missouri Municipal & Associate Circuit Judges Association
- Mystery Writers of America
- National Association of Criminal Defense Lawyers (NACDL)
- National Association of Legal Assistants (NALA)
- Organization of Legal Professionals
- Paralegal Education Board
- Professional Women’s Alliance
- St. Louis County Bar Association
- St. Louis County Domestic & Family Violence Council
- St. Louis Lawyers Association
- St. Louis Paralegal Association
- St. Louis Women’s Law Association
- The Authors Guild
- The Copyright Society of the USA
- The National LGBT Bar Association
- Urban Land Institute
- Women’s Lawyers Association
- Women’s White Collar Defense Association
