Patan is one of the 182 Legislative Assembly constituencies of Gujarat state in India. It is part of Patan district and a segment of Patan Lok Sabha constituency. It is numbered as 18-Patan.

The Gujarat Legislative Assembly or Gujarat Vidhan Sabha is the unicameral legislature of the Indian state of Gujarat, in the state capital Gandhinagar. Presently, 182 members of the Legislative Assembly are directly elected from single-member constituencies (seats). It has a term of 5 years unless it is dissolved sooner. 13 constituencies are reserved for scheduled castes and 27 constituencies for scheduled tribes. From its majority party group or by way of a grand coalition cabinet of its prominent members, the state's Executive namely the Government of Gujarat is formed.