Muchnick is a surname. Notable people with the name include:
Avi Muchnick (born 1979), artist, author, programmer and entrepreneur Isadore H. Y. Muchnick (1908–1963), American politician Sam Muchnick (1905–1998), American professional wrestling promoter Steven Muchnick (1945–2020), computer science researcher and author
See also Reed Elsevier, Inc. v. Muchnick, 559 U.S. 154 (2010), case involving copyright law Sam Muchnick Memorial Tournament