Kārlis Ozoliņš (born 15 June 2002) is a Latvian tennis player.

Ozoliņš has a career high ATP singles ranking of World No.

[1] He reached the boys' doubles final at the 2020 Australian Open alongside Mikolaj Lorens.

They were defeated however, by Leandro Riedi and David Ionel in a very close three-set match 7–6(10–8), 5–7, [4–10].

Ozoliņš represents Latvia at the Davis Cup, where he has a W/L record of 0–1 in singles and 1–0 in doubles combining as 1–1.