Wat Sommanat (Thai: วัดโสมนัส, pronounced [wát sǒːm.mā.nát]) is a khwaeng (sub-district) in Pom Prap Sattru Phai District, Bangkok.

Wat Sommanat is named after Wat Sommanat Wihan, a local Buddhist temple that faces Khlong Phadung Krung Kasem canal. The area is considered as the northernmost part of the district, with a total area of 0.350 km (0.135 mi).

The sub-district bordered by other areas (from the north clockwise): Dusit and Suan Chitlada in Dusit District (Khlong Phadung Krung Kasem is a borderline), Si Yaek Maha Nak in Dusit District (Khlong Phadung Krung Kasem is a borderline), Khlong Maha Nak and Ban Bat in its district (Lan Luang Road is a borderline), and Ban Phan Thom with Bang khun Phrom in Phra Nakhon District (Outer Ratchadamnoen Avenue is a borderline).

It can also be divided into five communities.

Nang Loeng is another name for the area.

In 2019, it had a total population of 6,672 people.

• Pom Prap Sattru Phai Office District
• Wat Sommanat Wihan
• Wat Sunthorn Thammathan (Wat Khae Nang Loeng)
• Talat Nang Loeng
• Thewakam Rangrak Bridge (shared with Si Yaek Maha Nak and Suan Chitlada of Dusit)
• Rajadamnern Boxing Stadium
• Ministry of Tourism and Sports
• Nanglerng Police Station
• King Prajadhipok Museum

13°45′30″N 100°30′47″E / 13.758427°N 100.513061°E / 13.758427; 100.513061