| State: | SD |
| Type: | SD |
| Route: | 17 |
| Map Notes: | Map of South Dakota with SD 17 in red |
| Length Mi: | 1.006 |
| Length Ref: | [1] |
| Direction A: | South |
| Terminus A: | at Lennox |
| Direction B: | North |
| Terminus B: | 278th Street at Lennox |
| Section: | 140 |
| Counties: | Lincoln |
| Previous Type: | SD |
| Previous Route: | 16 |
| Next Type: | US |
| Next Route: | 18 |
South Dakota Highway 17 (SD 17) is a 1adj=midNaNadj=mid state highway in southeastern South Dakota, United States. It runs along the eastern edge of Lennox. SD 17 formerly continued south to what is now SD 46 near Centerville, and north to SD 42 west of Sioux Falls.
SD begins at the intersection with SD 44 in southeastern Lennox, in the west-central part of Lincoln County. It travels north along the eastern corporate limit of the town for 1miles. It ends at the intersection with 278th Street at the northeastern corner of the Lennox corporate limits.[2]
The original SD 17 was established in 1926, from west of Milbank to Peever. This became part of SD 15 by 1929 when it extended north.[3] The current SD 17 was established by 1929. It originally began at an intersection with what is now SD 46 near Centerville. This segment was decommissioned in the 1990s.
In 2018, the South Dakota State Legislature removed the portion of SD 17 that ran from its current northern terminus up to SD 42 from the state highway system and turned it over to local control.[2]