Blacknall is a surname. It may refer to:
John Blacknall, a 16th-century mill-owner in England. Mary Blacknall, daughter of John Blacknall and wife of Sir Ralph Verney, 1st Baronet, of Middle Claydon. William Blacknall, a 16th-century mill-owner in England, great-grandfather of Mary Blacknall. Saeed Blacknall, an American coach and former NFL player known for 2016 Big Ten Football Championship Game. Ben Blacknall, an American football player and coach also former United States Air Force Sergeant. Derek Blacknall, defensive player for ECU Pirates starting in 2007. He later appeared in the video game NCAA Football 12.
See also Blacknall Map Blacknall Memorial Presbyterian Church Richard D. Blacknall House