Chum Saeng (Thai: ชุมแสง, pronounced [t͡ɕʰūm sɛ̌ːŋ]) is a district (amphoe) in Nakhon Sawan province, upper central Thailand.

The government separated some parts of Mueang Nakhon Sawan district to establish Tambon Koei Chai.

The district office was moved to the west bank of the Nan River and renamed to Chum Saeng in 1915.

[3] Chum Saeng during the reign of King Rama V was considered a community of Thai-Chinese and was the center of rice trade by water.

[3] Neighboring districts are (from the north clockwise): Pho Thale and Bang Mun Nak of Phichit province, Nong Bua, Tha Tako, Mueang Nakhon Sawan and Kao Liao of Nakhon Sawan Province.

Therefore suitable for cultural tourism there are many interesting places like Chum Saeng Old Market, which is over 100 years old, Chum Saeng Railway Station, the classical railway station and the last stop of Nakhon Sawan before entering Phichit, Wat Koei Chai Neua temple, King Taksin Statue rim Nan River, Hiran Narumit Bridge, Chao Pho-Chao Mae Chum Saeng Shrine etc.