The Chukotko-Kamchatkan or Chukchi–Kamchatkan languages are a language family of extreme northeastern Siberia. Its speakers traditionally were indigenous hunter-gatherers and reindeer-herders. Chukotko-Kamchatkan is endangered. The Kamchatkan branch is moribund, represented only by Western Itelmen, with less than a hundred speakers left. The Chukotkan branch had close to 7,000 speakers left (as of 2010, the majority being speakers of Chukchi), with a reported total ethnic population of 25,000.

While the family is sometimes grouped typologically and geographically as Paleosiberian, no external genetic relationship has been widely accepted as proven. The most popular such proposals have been for links with Eskimo–Aleut, either alone or in the context of a wider grouping.

Less commonly encountered names for the family are Chukchian, Chukotian, Chukotan, Kamchukchee and Kamchukotic. Of these, Chukchian, Chukotian and Chukotan are ambiguous, since the three terms are sometimes used to refer specifically to the family's northern branch; the last two names are portmanteau words referring to both branches.

In addition, Luorawetlan (also spelled Luoravetlan) has been in wide use since 1775 as a name for the family, although it is properly the self-designation of one of its constituent languages, Chukchi.

The Chukotko-Kamchatkan family consists of two distantly related dialect clusters, Chukotkan and Kamchatkan. Chukotkan is considered anywhere from three to five languages, whereas there is only one surviving Kamchatkan language, Itelmen.

The relationship of the Chukotkan languages to Itelmen is at best distant, and has been met with only partial acceptance by scholars.

All the Chukotko-Kamchatkan languages are under pressure from Russian. Almost all speakers are bilingual in Russian, and few members of the ethnic groups associated with the languages born after 1970 speak any language but Russian.

The accepted classification is this: