Ulrik Fredrik Johannes Patz[1] (born 3 July 1993[2] in Stockholm[citation needed]) is a Swedish curler.

He is a 2014 European mixed curling champion, a three-time Swedish mixed curling champion (2014, 2017, 2024) and World Mixed Curling Champion 2024.

Johannes Patz from well known Swedish family of curlers, which includes his father Flemming (who is also a coach),[4] his mother Susanne,[5] his two uncles (brothers of Susanne) Rickard (also a coach) and Fredrik as well as his aunt (sister of Flemming) Christina.

The curling interest in the family started with the great grandfather of Johannes, John Hallström, and the interest was shared by his son Mats and his wife Mona .

This biographical article relating to curling in Sweden is a stub.