Lincoln is a town in Providence County, Rhode Island, United States. The population was 22,529 at the 2020 census. Lincoln is located in northeastern Rhode Island, north of Providence. Lincoln is part of the Providence metropolitan statistical area and the Greater Boston combined statistical area.

Lincoln was settled in the 17th century as part of the Louisquisset grant, and several colonial stone-enders still exist in the town. Lincoln Woods State Park is located within the town.

Limestone quarrying has occurred there since colonial times at the village of Lime Rock. Lincoln was a part of the town of Smithfield until 1871, when it was split off and named in honor of Abraham Lincoln. The city of Central Falls was part of Lincoln until it split off itself in 1895. Lincoln became an important mill town in the late 19th century, with many textile factories running along the Blackstone River. Lincoln's villages include Manville, Albion, Lime Rock, Lonsdale, Fairlawn, Quinnville, and Saylesville.

In 2008, the town was ranked #63 in Money Magazine's "Best Places to Live".

Lincoln is in the lower Blackstone Valley of Rhode Island and in the John H. Chafee, Blackstone River Valley National Heritage Corridor, New England's historic National Park area.

According to the United States Census Bureau, the town has a total area of 18.9 square miles (49 km²), of which 18.2 square miles (47 km²) is land and 0.7 square miles (1.8 km²) (3.80%) is water.

The town is on the west bank of the Blackstone River. Lincoln borders seven other Rhode Island municipalities, tied for the most in the state- Pawtucket and North Providence border Lincoln to the south, Central Falls and Cumberland border Lincoln to the east, Smithfield and North Smithfield border Lincoln to the west, and Woonsocket borders Lincoln to the north.

Lincoln is home to Lincoln Woods State Park and Bally's Twin River Lincoln Casino Resort (formerly a racetrack known as Lincoln Downs and Lincoln Park).