| Clark, ND (Township) |
| Clark, KS (Township) |
| Clark, NE (Township) |
| Clark, IN (Township) |
| Clark County, MO (County) |
| Clark County, AR (County) |
| Clark County, KY (County) |
| Clark County, IN (County) |
| Clark County, IL (County) |
| Clark County, ID (County) |
| Clark County, NV (County) |
| Clark County, KS (County) |
| Clark County, SD (County) |
| Clark County, OH (County) |
| Clark County, WA (County) |
