Krzysztof Głowacki (born 31 July 1986) is a Polish professional boxer who has held the WBO junior-heavyweight title twice; from 2015 to 2016 and again in 2019 (elevated from interim champion).

Glowacki first started training aikido and karate in the club Orzel Walcz, before finally deciding to pursue a career in boxing.

Glowacki became a father at the age of 18, and, after finishing high school realized that he needs to support his family, so he gave up on studying and took up boxing full-time.

[2] Born in Walcz, north west Poland,[3] Krzysztof Głowacki fought 125 amateur fights (103 Wins, 19 Losses and 3 Draws).

In 2009, Głowacki won vacant Baltic Boxing Union International title, defeating Łukasz Rusiewicz by points decision.

On 18 August 2012, he won the vacant WBO Inter-Continental cruiserweight title, defeating Felipe Romero by sixth-round technical knockout (TKO).

On 31 January 2015, Głowacki won WBO European cruiserweight title by unanimous decision (118-110, 118-110 and 120–108) against Nuri Seferi (36-6, 20 KOs) at Torun, Poland.

Głowacki lost the WBO cruiserweight championship against undefeated Ukrainian boxer Oleksandr Usyk (9-0, 9 KOs) on 17 September 2016 at the Ergo Arena in Gdańsk, Poland.

[7] On 10 November 2018 Głowacki won the vacant WBO interim title by unanimous decision (118-110, 117–110, 115–112) against Maxim Vlasov (42-2, 25 KOs)[8] in the World Boxing Super Series cruiserweight quarter-final.

[16] At the end of July 2024, it was announced that Głowacki would face former kickboxer Dawid Kasperski on September 14 at KSW 98: Paczuski vs. Zerhouni in Lubin.