Boris Pistorius married political scientist Julia Schwanholz. The wedding took place between Christmas and New Year's Eve.

The two have probably been dating each other for more than a year. From 2016 to 2022, Pistorius was with Doris Schröder-Köpf (SPD), the ex-wife of former Chancellor Gerhard SchröDer (SPd) has been married to Schwan Holz since 2012. The couple have a daughter, a son and a daughter-in-law.