Manuel Teles da Silva, 3rd Marquis of Alegrete, 4th Count of Vila Maior (6 February 1682 — 9 February 1736), was a Portuguese nobleman, statesman, and historian.

Manuel Teles da Silva was a Fidalgo of the Royal Household of João V of Portugal.

In 1729 he became commander of the chapters of the Order of Christ in Albufeira and other nearby locales.

Working alongside his father and grandfather, he studied the History of mathematics and horsemanship.

[1] On 8 September 1698, Teles da Silva married Eugênia Rosa de Lorena, daughter of Nuno Álvares Pereira de Melo, 1st Duke of Cadaval.