The 1911 United States Senate election in Pennsylvania was held on January 17, 1911. Incumbent George T. Oliver was re-elected by the Pennsylvania General Assembly to the United States Senate. This was the last Class I U.S. Senate election to be decided by the Pennsylvania General Assembly before the ratification of the 17th Amendment to the U.S. Constitution, which mandated direct election of U.S. Senators.
The Pennsylvania General Assembly, consisting of the House of Representatives and the Senate, convened on January 17, 1911, to elect a Senator to serve the term beginning on March 4, 1911. The results of the vote of both houses combined are as follows:
|Republican||George T. Oliver (Inc.)||181||70.43|
|Democratic||J. Henry Cochran||35||13.62|
|Democratic||James B. Riley||3||1.17|
|Democratic||William H. Berry||1||0.39|
|Democratic||George W. Guthrie||1||0.39|
|Socialist||Joseph E. Cohen||1||0.39|
- Cox, Harold (January 31, 2007). "Pennsylvania Election Statistics: 1682-2006". The Wilkes University Election Statistics Project. Wilkes University.
| Pennsylvania U.S. Senate election (Class I)