Sivell can be both a masculine given name and a surname. Notable people with the name include:
Given name Sivell Lane (1881–1961), English cricketer
Surname Jim Sivell (1914–1997), American football guard Laurie Sivell (born 1951), English football goalkeeper Rhoda Cosgrave Sivell, Irish-Canadian poet and rancher Richard Sivell, New Zealand conspiracy theorist Robert Sivell, Scottish portrait artist
See also Sivells Bend, Texas, U.S., an unincorporated community