S
- Sagers Lake, Porter County
- Salamonie Lake
- Lake Santee
- Shriner Lake
- Lake Shafer
- Silver Lake, Steuben County
- Simonton Lake, Elkhart County, Indiana
- Snow Lake, Steuben County
- Spectacle Lake, Porter County
- Stone Lake, LaPorte County
- Sugar Mill Lake
- Summit Lake, Henry County - located in Summit Lake State Park
- Sweetwater Lake
- Syracuse Lake
Sylvan Lake, Noble Co.
Read more about this topic: List Of Lakes In Indiana