Mariah is a female given name. Mariah may also refer to: People:
- Mariah Carey, American singer/songwriter
- Mariah Stanley, American country music child singer
- Mariah Fredericks, author of bestselling fiction books for teens
- Mariah Stewart, author of romantic fiction
- Mariah Sensuel, Finnish erotic actress
Other uses:
- Camp Mariah, camp sponsored by Mariah Carey to benefit children from low-income communities
- Black Mariah, an English electro-rock band
- Mariah (JoJo's Bizarre Adventure), a fictional character from the manga JoJo's Bizarre Adventure
- Mariah Wong, a fictional character from the anime and manga series Beyblade
- Mariah's Storm, an American thoroughbred filly racehorse
