See also: Appleton Locks 1-3 Historic District.
| Appleton Lock 4 Historic District | |
| Nrhp Type: | hd |
| Nocat: | yes |
| Location: | Fox River at John St. in Appleton, Wisconsin |
| Refnum: | 93001329 |
| Added: | December 7, 1993 |
Appleton Lock 4 Historic District is a historic district containing a 1907-built waterway lock in Appleton, Wisconsin. It was added to the National Register of Historic Places in 1993 for its significance in engineering and transport.[1]