Kannur Legislative Assembly Constituency is one of the 140 state legislative assembly constituencies in Kerala in southern India. It is also one of the seven state legislative assembly constituencies included in Kannur Lok Sabha constituency. As of the 2021 Assembly elections, the current MLA is Kadannappalli Ramachandran of Cong(S).

For the first election conducted to the Kerala Legislative Assembly in 1957, Kannur city had two Assembly constituencies - Cannanore-I and Cannanore-II. Following the 1965 delimitation, Cannanore-I Assembly constituency was renamed to Kannur while Cannanore-II was replaced by the newly formed Edakkad Assembly constituency.

In the 2008 delimitation of constituencies, a major portion of the erstwhile Kannur Assembly constituency was replaced by Azhikode Assembly constituency. Edakkad Assembly constituency became defunct in 2011. A major portion of the erstwhile Edakkad Assembly constituency is now a part of Kannur Assembly constituency. Currently, the Kannur Municipal Corporation has two assembly constituencies: Kannur and Azhikode.

Kannur Assembly constituency is composed of the following local self-governed segments:

The following list contains all members of the Kerala Legislative Assembly who have represented the constituency:

*by-election

There were 1,73,961 registered voters in the constituency for the 2021 election.

There were 1,63,205 registered voters in the constituency for the 2016 election.