| Birthname: | Robert Opie Norris Jr. |
| Office: | President pro tempore of the Senate of Virginia |
| Term Start: | January 10, 1945 |
| Term End: | January 11, 1950 |
| Predecessor: | Henry T. Wickham |
| Successor: | Morton G. Goode |
| State Senate2: | Virginia |
| Term Start2: | January 24, 1928 |
| Term End2: | January 11, 1956 |
| Preceded2: | Thomas J. Downing |
| Succeeded2: | Thomas H. Blanton |
| Office3: | Member of the Virginia House of Delegates for Lancaster and Richmond |
| Term Start3: | January 10, 1912 |
| Term End3: | January 24, 1928 |
| Preceded3: | R. Carter Wellford |
| Succeeded3: | Raymond Sisson |
| Birth Date: | 4 November 1880 |
| Birth Place: | Lively, Virginia, U.S. |
| Death Place: | Richmond, Virginia, U.S. |
| Party: | Democratic |
| Education: | Richmond College (LLB) |
Robert Opie Norris Jr. (November 4, 1880 – June 21, 1960) was an American Democratic politician who served as a member of the Virginia House of Delegates and Senate. He was the Senate's President pro tempore from 1945 to 1950.[1]
The Robert O. Norris Bridge that spans the Rappahannock River between Lancaster and Middlesex counties is named in his honor.