| Litigants: | United States v. Mouat |
| Decidedate: | January 23 |
| Decideyear: | 1888 |
| Usvol: | 124 |
| Uspage: | 303 |
| Holding: | Only those persons appointed by the President, the courts of law, or the head of a department are Officers of the United States. All other persons are mere employees. |
| Majority: | Miller |
| Joinmajority: | unanimous |
| Lawsapplied: | U.S. Const. art. II, ยง 2, cl. 2 |
United States v. Mouat, 124 U.S. 303 (1888), was a decision of the United States Supreme Court concerning the Appointments Clause.