Kierulf is a surname. Notable people with the surname include:
Anders Kierulf, author of Smart Game Format Anine Kierulf (born 1974), Norwegian lawyer Brian Kierulf, American songwriter and producer Henrik Gottfries Kierulf (born 1981), Norwegian politician Otto Richard Kierulf (1825–1897), Norwegian military officer, politician, and sports administrator Severin Kierulf (17521834), Danish businessman in Danish India