Ignacy Tłoczyński (14 July 1911, in Poznań – 25 December 2000, in Edinburgh) was a Polish tennis player.
His most significant success was winning at Welsh Championships in 1932. He reached the quarterfinals at Wimbledon in 1939.
Tłoczyński participated in 10 Davis Cup ties for Poland from 1930–1939, posting a 23–8 record in singles and a 3–9 record in doubles.