Østsinni Church (Norwegian: Østsinni kirke) is a parish church of the Church of Norway in Nordre Land Municipality in Innlandet county, Norway.

It is one of the churches for the Østsinni parish which is part of the Hadeland og Land prosti (deanery) in the Diocese of Hamar.

The white, wooden church was built in a long church design in 1877 using plans drawn up by the architect Jacob Wilhelm Nordan.

The new church was designed by Jacob Wilhelm Nordan.

The main floor of the church measures about 357 square metres (3,840 sq ft) and there is also a 50-square-metre (540 sq ft) second floor seating gallery.