| Flynn Creek | |
| Name Etymology: | Named for Ed Flynn, local settler |
| Pushpin Map: | South Dakota |
| Pushpin Map Caption: | Flynn Creek mouth location in South Dakota |
| Subdivision Type1: | Custer County, South Dakota |
| Discharge1 Location: | (near mouth)[1] |
| Source1: | Flynn Creek Spring |
| Mouth: | Lame Johnny Creek, South fork |
| Progression: | Lame Johnny Creek→ Cheyenne River→ Missouri River→ Mississippi River→ Gulf of Mexico |
| River System: | Cheyenne River system |
Flynn Creek is a stream in Custer County, South Dakota. Its source is the Flynn Creek spring near the unincorporated community of Sanator, and its mouth is at the south fork of the Lame Johnny Creek, which later flows into the Cheyenne River about 20mile away.
Flynn Creek is named for Ed Flynn, a pioneer settler.[2]