Konstantin Mihailov (also Mihaylov; Bulgarian: ?????????? ??h?????; born 22 May 1964) is a Bulgarian ice hockey and roller in-line hockey goaltender.
He played in 28 Ice Hockey World Championships with the Bulgaria men's national ice hockey team, and three IIHF Inline Hockey World Championships with the Bulgaria men's national inline hockey team, then retired from international play at age 51.
His lengthy international career was recognized by the International Ice Hockey Federation (IIHF) in 2019, as a recipient of the Torriani Award.