Matthias Alleyn (died 9 April 1642) was a 17th-century London gentleman and the second Master of the College of God's Gift.
[2] Both he and his cousin Thomas, who became the first master, met the criteria of being of Edward Alleyn's blood and surname, although he was married.
Edward Alleyn named him in the Deed of Foundation as Warden, thus he was appointed on 13 September 1619.
It has been noted that in the period between the founder's death and when the college was reconstituted in 1857, the chief object of the Master, Warden and Fellows had been to lead the pleasantest life possible with little regard to furthering Alleyn's directions to provide every poor scholar with adequate preparation for the world.
[3] He died on 9 April 1642 and was succeeded in the post by another cousin of the founder, a second Thomas Alleyn who had served as warden in the period that Matthias had been Master.