| Interlocking Forms | |
|---|---|
 The sculpture in 2015 | |
 | |
| Artist | Donald Wilson |
| Year | 1977 |
| Type | Sculpture |
| Medium | Indiana Limestone |
| Condition | "Treatment needed" (1993) |
| Location | Portland, Oregon, United States |
| 45°31′12″N 122°40′37″W / 45.51996°N 122.67701°W | |
Interlocking Forms is an outdoor 1977 Indiana Limestone sculpture by Donald Wilson, located in downtown Portland, Oregon.