Fibroid most commonly refers to a uterine fibroid, but may also refer to:
- Leiomyoma<!-- or myoma (smooth muscle cells) (not WP:DABMENTIONED in either)-->, a benign smooth muscle tumor (often found in the uterus)
- Uterine fibroid, a leiomyoma in the uterus
- Fibroma, a tumor of fibrous connective tissue usually found on the skin
- Inflammatory fibroid polyp, in the colon