Walter Overbury (1592–1637) was an English politician who sat in the House of Commons at various times between 1621 and 1626.
His father was Chief Justice of the Great Sessions for Carmarthenshire, Cardiganshire, and Pembrokeshire in 1610, and Recorder of Gloucester from 1603 to 1626.
Overbury matriculated at Magdalen College, Oxford, on 16 June 1610, aged 18 and was awarded BA on 21 February 1612.
[1] Overbury married firstly by licence dated 6 November 1621 Mary Pinchion (d. 1623), daughter of Sir Edward Pinchion of Writtle, Essex and niece of Richard Weston, the newly appointed Chancellor of the Exchequer.
He married secondly by licence, dated 21 June 1627, Magdalen, the widow of Edward Grimston of Bradfield, Essex and daughter of Thomas Marsham, a London merchant.