Tatum Danielle McCann (born March 25, 1999) is an American child actress.

McCann was born in Riverside, California. She is the younger sister of Hailey McCann. She started her career at the age of four doing several television commercials and playing a role on NYPD Blue, among other television shows. She made her movie debut on 2006 film Click as 5/6 year old Samantha Newman. Most recently, Tatum appeared in the 2009 film ''The Time Traveler's Wife'' as Young Alba along with her sister, Hailey who played the older version of Tatum's character.