Kerpert () is a commune in the Côtes-d'Armor department of Brittany in northwestern France.
Kerpert has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Kerpert is . The average annual rainfall is with January as the wettest month. The temperatures are highest on average in August, at around , and lowest in January, at around . The highest temperature ever recorded in Kerpert was on 9 August 2003; the coldest temperature ever recorded was on 2 January 1997.
The inhabitants of Kerpert are known in French as kerpertois.