Saint John's Group of Schools and University (Thai: กลุ่มโรงเรียนเซนต์จอห์น) is a group of private Catholic educational institutions run by the Vincentian located in Thailand.

Saint John's School is the home of Saint John's Choir, the first choir in Thailand to win a gold medal at the annual Choir Olympic (Xiamen, Republic of China, 15–26 July 2006).

The Saint John's Affiliate School Programme was launched in 2007 with the aim of using Saint John's educational knowledge to improve private schools throughout the Kingdom of Thailand.

While each school that joins the programme aims to improve educational standard across all subject areas, the two initial points of development focus are English instruction and IT support, as Saint John's group of schools are known to be leading schools in these two areas in the kingdom.

[citation needed] As of May 2008, three schools have been admitted to the affiliation programme: