Some of the organizations served by Windes & McClaughry include:
- American Heart Association
- American Red Cross
- American Youth Soccer Organization
- Bethany Lutheran
- Boy Scouts of America
- Boys and Girls Club of Long Beach
- California Cancer Foundation
- California CPA Education Foundation
- Camp Fire USA of Long Beach
- Coastline Community Credit Union
- Downtown Long Beach Lions Club
- Family Services of Long Beach
- Girls, Inc. of Orange County
- Kiwanis Club of Long Beach
- LA BioMed Foundation
- Long Beach Area Chamber of Commerce
- Long Beach BLAST
- Long Beach Community College Foundation
- Long Beach Economic Development Commission
- Long Beach Education Foundation
- Long Beach Estate Planning and Trust Council
- Long Beach Fire Department
- Long Beach Grand Cru
- Long Beach Leadership Prayer Breakfast
- Long Beach Library Foundation
- Long Beach Police Department
- Long Beach Rotary Club
- Long Beach Strategic Marketing, Inc.
- Long Beach Symphony Association
- Los Alamitos High School Athletic Booster Club Boards
- Memorial Medical Center Foundation
- Muscular Dystrophy Association
- National Conference for Community and Justice
- North Orange County Credit Union
- Orangewood Children’s Homes
- Parent Teachers Association
- Raise Foundation
- Salvation Army
- St. Mary Medical Center Foundation
- Tichenor Support Foundation
- Wolfpack Soccer Club
- YMCA of Greater Long Beach
- Young Horizons