Oliver Hassler (born 4 January 1988) is a German Greco-Roman wrestler.

He won the silver medal in the men's 98 kg event at the 2014 World Wrestling Championships held in Tashkent, Uzbekistan.

[1][2] In the final, he lost against Artur Aleksanyan of Armenia.

In 2019, he won one of the bronze medals in the men's 97 kg event at the Military World Games held in Wuhan, China.

This biographical article relating to a German sport wrestler or wrestling coach is a stub.