Kathmandu 1 is one of 10 parliamentary constituencies of Kathmandu District in Nepal.

This constituency came into existence on the Constituency Delimitation Commission (CDC) report submitted on 31 August 2017.

[1] Kathmandu 1 parliamentary constituency consist area of ward number 10, 11, 29 and 31 of Kathmandu Metropolitan City.

It encompasses the following Bagmati Province Provincial Assembly segment