Rubya (or Rubyia) is the site of a Catholic Church mission to the south of Bukoba near the west bank of Lake Victoria in Muleba District, Kagera Region, Tanzania.

Rubya is in the Kagera Region of north-western Tanzania, at an elevation of about 1,500 metres (4,900 ft) above sea level.

[2] In 1894 the Apostolic Vicariate of Victoria–Nyanza was split into the vicariates of Southern Victoria Nyanza, south of Lake Victoria, an eastern portion called "Upper Nile" that was given to the English Mill Hill Missionaries, and a northern portion called "Northern Nyanza" that covered the south and west of today's Uganda.

[3] John Joseph Hirth was appointed vicar Apostolic of Southern Victoria Nyanza, at that time part of German East Africa, on 13 July 1894.

[4] The junior seminary of Bukumbi was officially opened in 1903, and in 1904 was transferred first to Bukoba and then to Rubya, near the bishop's home.

[6] Subjects included Latin, history, geography, writing, arithmetic, Gregorian chants and German.

[8] Hirth was increasingly interested in Rwanda, and starting in 1903 he brought many of the brightest Rwandan pupils to study at Rubya.

[11] During World War I (1914-1918) the French White Fathers had to leave the seminary and return home, or find a more hospitable vicariate.

They contacted WAMATA, a self-help organization for people with AIDS, obtained support from an international donor, and in June 1991 started a pioneer program for home-based care.

Village health workers are a key element of the program, all people with AIDS who have been trained in home care and in managing the illness.