Ladd is a village in Bureau County, Illinois, United States.

The settlement was originally named Osgood after the manager of the Whitebreast Fuel Company.

The Whitebreast Fuel Company, based in Ottumwa, Iowa was the major coal supplier for the Chicago, Burlington, and Quincy Railroad.

The Ladd mine went bankrupt in 1901 and was purchased by the Illinois Third Vein Coal Company, owned by Samuel Dalzell of Spring Valley.

At its height, the mine employed over 700 men and took an average of 1200 tons of coal a day from the ground.

It is located between the village of Cherry to the north and the city of Spring Valley to the south.

According to the 2021 census gazetteer files, Ladd has a total area of 1.21 square miles (3.13 km2), all land.