Louis Lincoln Emmerson (December 27, 1863 – February 4, 1941) was an American Republican politician and the twenty-seventh governor of Illinois.

[3] After completing his education in the Albion public school system, Emmerson moved to Mount Vernon, Illinois, in 1883, and established a career in the mercantile business.

[1] Emmerson won the 1928 Republican gubernatorial nomination by a margin of 63% to 37% over the incumbent governor, the corrupt Len Small, and was sworn into the governorship on January 14, 1929.

[3] During his service from 1929 to 1933, at the start of the Great Depression, legislation was adopted that eased penalties on overdue taxes and allowed for the issuance of emergency bonds.

Also, a motor fuel-tax was instituted and used for improvements in the highway system, the first unemployment commission was initiated, and federal grants were sanctioned for the completion of the Lakes-to-the-Gulf Waterway.