Patrick Haakon Olsen (born 23 April 1994) is a Danish professional footballer who plays as a midfielder for Liga I club Dinamo București.

A talent of the Brøndby academy, Olsen joined Italian Serie A club Inter Milan at age 18.

[9] After a new coach arrived at Lens, Olsen played less during the 2016–17 season and in the winter break he moved to Swiss club Grasshoppers on 27 January 2017.

[15] On 19 August 2020, it was announced that Olsen had signed a five-year contract with fellow Danish Superliga club AGF.

[17] On 15 February 2022, Olsen moved abroad yet again, as he was announced to have joined Polish Ekstraklasa side Śląsk Wrocław on a three-and-a-half-year deal.

[18] He served as the club's captain for the majority of the 2022–23 season and helped Śląsk finish the following league campaign as runners-up.

[19] On the day of his departure from Śląsk, Olsen signed for Romanian Liga I outfit Dinamo București on a two-year contract.