NYAC is the initialism for:

• New York Athletic Club
• National Youth Advocacy Coalition
• Northumberland Youth Advisory Council, Ontario, Canada
• New York AIDS Coalition

• Gelb
• Gelb (album)
• Gelbelsee
• Gelbensande
• Gelber Muskateller
• Gelber Weihrauch
• Gelber Weissburgunder
• Gelbfisz
• Gel bracelet
• Gel bracelets
• Gelbstoff
• Gelb (surname)
• Gelbvieh
• Gelbvieh Cattle
• Gelbwurst
• GELC
• Gelcap
• Gelcaps
• Gel Cell
• Gel cell
• Gelchsheim
• Gelco
• Gel coat
• Gel conference
• Geldanamycin