Petru-Alexandru Luncanu (born 7 May 1989) is a Romanian professional tennis player.

Luncanu has played on the ITF Men's Circuit, the ATP Challenger Tour and for the Romania Davis Cup Team.

On 2 November 2009 he reached his highest ATP singles ranking of 304 whilst his highest doubles ranking was 286, which he achieved on 2 November 2015.

[1] In 2023, Luncanu was banned from professional tennis for five years and fined $40,000 by the International Tennis Integrity Agency after being found guilty of five match fixing charges between 2017 and 2021.

This biographical article relating to Romanian tennis is a stub.