Westlands is an electoral constituency in Kenya. It is one of the seventeen constituencies in Nairobi County. The constituency is situated within Westlands Sub-county, formerly Westlands District. The entire constituency is located within Nairobi City County and has an area of 72.4 km² (28.0 sq mi). It was known as Nairobi Northwest Constituency at the 1963 elections, then as Parklands Constituency and since 1988 elections it has been known as Westlands Constituency.

In 2013, the Independent Electoral and Boundaries Commission hived off a portion of Westlands Constituency to form part of Dagoretti North Constituency.

Westlands constituency contains some of the high income suburb areas such as Runda, LakeView, Muthaiga, Kitisuru and Highridge. Slum areas like Kangemi, Githogoro, DeepSea, Mji Wa Huruma, Kaptagat, Kibagare, Maasai and Suswa are also located within the constituency.

The Sub-county shares the same boundaries with what was Westlands Division of Nairobi and constituency prior to 2013. Some areas that are electorally placed under Dagoretti North Constituency such as: Kilimani, Lavington, Muthangari, Maziwa and Kileleshwa, form part of the sub-county. The sub-county is Deputy County Commissioner, working under the Ministry of Interior.