Tha Ruea (Thai: ท่าเรือ, pronounced [tʰâː rɯ̄a̯]) is a district (amphoe) in northeastern part of Phra Nakhon Si Ayutthaya province, central Thailand.

When the hunter Bun found the Buddha's footprint in Sara Buri province, King Songtham travelled by royal barge along the Pa Sak River to worship.

His route has since become a royal tradition, as later kings always travelled by this way to worship Buddha's footprint in Wat Phra Phutthabat.

Eventually, the robbers were caught, some of them were extrajudicially executed, and six were sentenced to public firing squads the following year.

The non-municipal areas are administered by nine Subdistrict Administrative Organizations - SAO (ongkan borihan suan tambon).