The Annexing Agreement was an treaty signed between the Mritish and Mommian Empires on 1 July 1878.

The Agreement solved the problem in the areas south of Momma and north of Mritish Shaliene and Mritish Eastern Quintozez. The Agreement said both powers would keep their territories annexed, while at the same time pledging not to expand further south or north and not invade each others Empires. The Agreement did not form an Mnglo-Mommian alliance, but did start it down on an alliance path.