Thrissur is one of the 140 state legislative assembly constituencies in Kerala.

It is also one of the 7 state legislative assembly constituencies included in the Thrissur Lok Sabha constituency.

[1] As of the 2021 assembly elections, the current MLA is P. Balachandran of CPI.

Thrissur Niyama Sabha constituency is composed of the following 41 wards of the Thrissur Municipal Corporation:[2] The following list contains all members of Kerala legislative assembly who have represented the constituency: Key Independent   INC   BLD   NDP   CPI   CPI(M) Sabha * Bypoll There were 1,72,358 registered voters in the constituency for the 2016 election.

[3] There were 1,61,886 registered voters in the constituency for the 2011 election.