Richard James Barr (November 28, 1865 – June 11, 1951) was an American politician and lawyer.

The 41st district was created by the 1901 reapportionment process and included DuPage and Will counties.

As the legislature was never reapportioned during his time, Barr would represent this district as-is for his entire tenure.

[3] In the 1903 Joliet mayoral election, Democratic candidate William C. Crollus defeated Barr's reelection effort.

[4] He served as the president pro tempore of the Illinois Senate during the 53rd, 54th, and 55th General Assemblies.