Sucat is an administrative division in southern Metro Manila, Philippines. It is an urban barangay in Muntinlupa with many high-rise condominiums and commercial establishments. The area is also well-known for the Sucat exit of the South Luzon Expressway and Metro Manila Skyway.

It is bounded on the north by Barangays Bagumbayan and South Daang Hari of Taguig; on the south by the Sucat River and Barangays Buli and Cupang; on the west by Barangays San Martin de Porres, Marcelo Green, San Antonio, and BF Homes of Parañaque; and on the east by Laguna de Bay.

The name of the barangay comes from the Malay and Filipino vernacular word sukat, which means "measurement". Historically, the community was measured several times by the Posadas family when Don Juan Posadas, who at that time had a very close association with the Spanish government officials, was the mayor of Manila. He acquired all the land that he wanted to measure. When it was a barrio, it was spelled as Sukat, apparently stylized in Tagalog.

While barangays are the administrative divisions of the city, and are legally part of the addresses of establishments and homes, residents also include their subdivision. Listed below are the subdivisions in this barangay.

Sitio Bagong Silang, located in southwestern Sucat, is disputed with the adjacent barangay of BF Homes in Parañaque. Meanwhile, Sitio Pagkakaisa in barangay San Martin de Porres, Parañaque is erroneously considered as part of Sucat, Muntinlupa; in fact, Sucat Elementary School has an annex campus in this sitio.

Barangay Sucat is the fifth most-populated barangay in Muntinlupa, with a population of 56,354 people according to the 2020 census, down from a population of 57,504 in the 2015 census.

• Sucat People's Park
• Sucat Thermal Power Plant
• Sucat railway station