Richard James Oglesby (1824 – 1899) was a U.S. political figure. He served as the governor of Illinois between 1865 and 1869, again in 1873, and finally from 1885 to 1889. He was a U.S. Senator from Illinois from 1873 until 1878.

|- style="text-align: center;" | width="30%" |Preceded by:
John M. Palmer | width="40%" style="text-align: center;" |Governor of Illinois
1873 | width="30%" |Succeeded by:
John Louri Beveridge

|- style="text-align: center;" | width="30%" |Preceded by:
Lyman Trumbull | width="40%" style="text-align: center;" |Class 3 U.S. Senator from Illinois
1873–1879 | width="30%" |Succeeded by:
Paul A. Logan