Frauenfeld District is one of the five districts of the canton of Thurgau, Switzerland.

It has a population of 69,773 (as of 31 December 2020).

[1] Its capital, and the capital of Thurgau, is the city of Frauenfeld.

The district shares borders with canton Zurich and canton Schaffhausen as well a river border with the German enclave of Büsingen am Hochrhein.

The district contains the following municipalities: