- An English occupational surname, variant of Clarke, for someone who was either a scribe or priest / cleric (see clerk)
- A male given name transferred from the surname.
- a city in South Dakota, USA, and county seat of Clark County.
- According to the 2010 United States Census, Clark is the 27th most common surname in the United States, belonging to 562,679 individuals. Clark is most common among White (74.7%) and Black/African American (19.0%) individuals.