Khalif Quadree Mitchell (born April 7, 1985) is a professional Canadian football and American Football defensive tackle who is currently a free agent. He has played for the B.C. Lions, Toronto Argonauts in the CFL and San Francisco 49ers in the NFL. In 2011, he won a Grey Cup with the BC Lions. He was signed by the San Francisco 49ers as an undrafted free agent in 2009 and released in 2010.