| WSDR | |
| City: | Sterling, Illinois |
| Area: | Rock River Valley |
| Airdate: | 1949 |
| Frequency: | 1240 kHz |
| Translator: | W226CL (93.1 MHz, Sterling) |
| Format: | News/Talk, Adult Contemporary |
| Language: | English |
| Power: | 500 watts (day) 1,000 watts (night) |
| Class: | C |
| Facility Id: | 37207 |
| Coordinates: | 41.8164°N -89.6703°W |
| Owner: | Fletcher M. Ford |
| Licensee: | Virden Broadcasting Corp. |
| Sister Stations: | WSSQ, WZZT |
| Webcast: | Listen Live |
WSDR (1240 AM) is an American radio station licensed to serve the community of Sterling, Illinois. The station is owned by Fletcher M. Ford and the broadcast license is held by Virden Broadcasting Corp.
WSDR broadcasts a news/talk radio format to the Rock River Valley. WSDR airs Classic rock music during the overnight hours, simulcasting their sister station WZZT 102.7 FM.
The station, established in 1949, was assigned the call sign "WSDR" by the Federal Communications Commission (FCC).