The Kamchatka constituency (No.45[a]) is a Russian legislative constituency covering the entirety of Kamchatka Krai.

The constituency previously occupied the whole territory of Kamchatka Oblast but after Kamchatka Oblast was merged with Koryak Autonomous Okrug in 2007 Kamchatka constituency absorbed the entirety of Koryak constituency.

A by-election was scheduled after Against all line received the most votes.