Wang Noi (Thai: วังน้อย, pronounced [wāŋ nɔ́ːj]) is a district (amphoe) in Ayutthaya province, Thailand, 50 km north of Bangkok.

[1] As the district lies along a long stretch of Phahonyothin Road (National Highway 1) as it leaves Greater Bangkok, Wang Noi has become a logistics hub, hosting warehouses for a broad range of industries.

The district is the site of one of Thailand Post's (THP) fully automated sorting centers.

As of 2018[update], THP is negotiating to purchase 100 rai of land to house the facility.

[2] The district is divided into 10 sub-districts (tambon), which are further subdivided into 68 villages (muban).