The Diocese of Tampere (Finnish: Tampereen hiippakunta, Swedish: Tammerfors stift) is the second oldest[1] and the largest diocese in the Evangelical Lutheran Church of Finland.

It was founded in 1554 when King Gustav Vasa divided the diocese of Turku, extending over the whole country, into two parts.

At first, the new diocese was established in Viipuri, the first bishop being Paavali Juusteen.

After the Russian occupation of Viipuri in 1723, the bishop's seat was moved to Porvoo instead.

In 2024, the current bishop is the Rt Revd Matti Repo.