Peter Gojowczyk (/ɡoʊˈjoʊvtʃɪk/ goh-YOHV-chik; born 15 July 1989) is a German former professional tennis player. He achieved a career-high ATP singles ranking of world No. 39 in June 2018. He won one ATP singles title and reached two more finals.

He qualified for his first Grand Slam main draw at the 2012 Australian Open.

Gojowczyk began the year by reaching his first tour-level semifinal at Doha as a qualifier, defeating sixth seed and countryman Philipp Kohlschreiber en route, before losing to Rafael Nadal in three sets (taking the first).

After qualifying at the Australian Open, he broke into the top 100 for the first time in his career.

In April, he defeated Jo-Wilfried Tsonga in five sets in a Davis Cup World Group quarterfinal tie.

In June, Gojowczyk reached the quarterfinals of Halle, defeating world No. 9 Milos Raonic in straight sets in the second round. In August at the US Open, he defeated Benjamin Becker in straight sets in the first round. He ended the year ranked as world No. 79.

Gojowczyk qualified for and then reached the second round of Wimbledon for the first time in his career at the Wimbledon Championships, defeating Marius Copil in the first round. He then lost to 18th seed Roberto Bautista Agut. Carrying his good form into the following week, Gojowczyk reached the semifinals in Newport.

In September, he won his maiden ATP title at the Moselle Open in Metz as a qualifier, defeating Benoît Paire in straight sets in the final.