Ronald Owen Lagden (21 November 1889 – 1 March 1915) was an English sportsman who played first-class cricket for Oxford University and represented England at rugby union.

[a] Lagden had a younger brother, Reginald, who was a first-class cricketer for Oxford's rivals, Cambridge University, as well as playing with Surrey.

His best innings was 99 not out, which he made in 1912 against H. D. G. Leveson-Gower's XI, missing out on a century when Australian Neville Fraser was adjudged leg before wicket to Ernest Smith for a duck.

[4] Apart from University Matches, Lagden also played against touring international sides, Australia in 1909, India in 1911 and South Africa in 1912.

[8] In 1914, Lagden joined the King's Royal Rifle Corps and was then attached to the 4th Battalion which were to fight in the Western Front.