Kristo Viiding (born June 27, 1984 in Tallinn) is an Estonian actor.

In 2008, he graduated from the 23rd year of the Estonian Academy of Music and Theater School of Performing Arts, majoring in acting, and in 2011, the master's degree in film directing at the Baltic Film and Media School. He was an actor of the Estonian Drama Theater from 2008 to 2013, a freelance actor and director from 2013 to 2019. Since 2019, he has been an actor of the Estonian Drama Theater again.