Constantin Blaha (born 1 December 1987) is an Austrian diver who specializes in the 1 m and 3 m springboard events.

He has represented his country during the 2008 Summer Olympics in Beijing where he failed to advance to the semifinal after classifying 22nd in the preliminary round of the men's 3 metre springboard.

[2] He participated in the 2013 World Aquatics Championships in Barcelona, Spain and ranked 5th and 9th in Men's 1 and 3 metre springboard, respectively.

Blaha once again represented Austria in the 2016 Summer Olympics in Rio de Janeiro, Brazil.

This biographical article relating to Austrian diving is a stub.