| Bill Roy Jr. | |
| State House: | Kansas |
| District: | 54th |
| Term Start: | 1991[1] |
| Term End: | 1992 |
| Successor: | Doug Mays |
| State House2: | Kansas |
| District2: | 53rd |
| Term Start2: | 1985[2] |
| Term End2: | 1990 |
| Predecessor2: | Vic Miller |
| Successor2: | Denise Everhart |
| Birth Date: | 11 May 1954[3] |
| Party: | Democrat |
| Spouse: | Juanita DeMotte Roy[4] |
| Father: | Bill Roy |
| Residence: | Topeka, Kansas |
William R. Roy Jr. (born May 11, 1954) is an American politician who served as a Democratic member of the Kansas House of Representatives from 1985 to 1992. Roy was the son of U.S. Congressman and Senatorial candidate Bill Roy. He was elected to the 53rd district in 1984, serving from 1985 to 1990, and one additional term in the 54th district from 1991 to 1992. He resided in Topeka, Kansas.