Theiviya Selvarajoo (born 20 June 1994) is a Malaysian tennis player.

Selvarajoo made her WTA tour debut at the 2013 Malaysian Open, having received a wildcard with Yus Syazlin Nabila Binti Yusri into the doubles tournament.

At the 2015 Malaysian Open, Selvarajoo received a wildcard into the doubles main draw with Jawairiah Noordin.

Playing for Malaysia at the Fed Cup, Selvarajoo has a win–loss record of 4–4.

This biographical article relating to Malaysian tennis is a stub.