| HYC | Data (WordPerfect)
| Others |
| HYC | Halloween Yacht Club
| Others |
| HYC | Hampton Yacht Club
| Others |
| HYC | Harlem Yacht Club
| Others |
| HYC | Harraseeket Yacht Club
| Others |
| HYC | Havurah Youth Center
| Others |
| HYC | Healthy You Challenge
| Others |
| HYC | Healthy Youth Coalition
| Others |
| HYC | Heartland Youth Choir
| Others |
| HYC | Heights Youth Club
| Others |
| HYC | Heikendorfer Yacht Club
| Others |
| HYC | Hellenic Yaris Club
| Others |
| HYC | Helping Your Child
| Others |
| HYC | Helpline Youth Counseling
| Others |
| HYC | Here's Your Chance
| Others |
| HYC | Heres Your Chance
| Others |
| HYC | High Wycombe, England, UK
| Others |
| HYC | Highland Yacht Club
| Others |
| HYC | Hillcrest Youth Center
| Others |
| HYC | Hingham Yacht Club
| Others |
| HYC | Hobcaw Yacht Club
| Others |
| HYC | Holiday Youth Convention
| Others |
| HYC | Homeless Youth Connection
| Others |
| HYC | Hong Yang Corporation
| Others |
| HYC | HOPE Youth Corps
| Others |
| HYC | Hot Yoga Centrum
| Others |
| HYC | Houston Yacht Club
| Others |
| HYC | Howth Yacht Club
| Others |
| HYC | Hudson Yacht Club
| Others |
| HYC | Hyannis Yacht Club
| Others |
| HYC | Hyannis Yacht Club's
| Others |