Damir Kajin (born 3 February 1962) is a Croatian politician.
Born in Koper, he grew up in Buzet.
Kajin was the Istrian Democratic Assembly (IDS) candidate in the 2009 Croatian presidential election.
He won 3.87% of the vote in the first round and was eliminated.
In 2013, Kajin was expelled from IDS.
In 2014, he founded a new party, Istrian Democrats (Croatian: Istarski demokrati).