Isah is both a given name and a surname. Notable people with the name include:
Given name Isah Umoru Akor (born 1991), Nigerian footballer Isah Aliyu (born 1999), Nigerian footballer Isah Eliakwu (born 1985), Nigerian footballer Isah Mohammad (born 1987), Nigerian taekwondo practitioner Isah Salihu (born 1991), Nigerian sprinter
Surname Ahmed Isah, Nigerian activist and radio personality Jibrin Isah (born 1960), Nigerian politician and banker Musa Isah (born 2000), Nigerian-born Bahraini athlete Mustapha Isah (born 2004), Nigerian footballer