Peter Luczak (Polish: Łuczak,[1] pronounced [ˈwuʈ͡ʂak]; born 31 August 1979) is a retired professional tennis player from Australia.

Luczak started playing tennis at the age of 5, he was introduced to the game by his Polish born father Kris.

[5] Luczak turned professional in 2000 and spent the year playing on the ITF Futures and ATP Challenger Series circuit during his break from university.

In 2002 Luczak played exclusively ATP Challenger Series circuit where he won his first title in Granby and lost to countryman Scott Draper at Binghamton in the final.

He made his Grand Slam debut in 2003 at the Australian Open where he reached the 3rd round defeating Attila Sávolt and Renzo Furlan before losing to Mario Ančić.

Luczak made his Davis Cup debut for Australia in 2005 against Argentina on grass, where he lost a dead rubber to Guillermo Coria, in addition to this he reached his best ever performance at ATP level where reached the semi-finals as a qualifier beating Fernando González at the Brasil Open along the way before losing to Alberto Martín[6] Luczak equalled his best Australian Open performance by making the third round in 2006 losing in four sets to Tommy Haas indoors as the roof was closed due to the heat rule.

After reaching his career high ranking in 2008, Luczak was diagnosed with a stress fracture of the pelvis after his loss to Jürgen Melzer at Roland Garros and was out for 14 weeks before returning to play against Chile in Davis Cup.

Luczak stayed on in South America and played the Copa Petrobras series of challengers on the clay, where he won Montevideo beating Pablo Cuevas 6–3, 7–6 in the semis before getting a walkover from Nicolás Massú in the final.

Luczak defeated Flock in the last round of qualification for the Fürth Challenger where he won the event without dropping a set in the main draw.