Sir David Roberts McMurtry (5 March 1940 – 9 December 2024) was an Irish-British billionaire businessman, who was the co-founder and executive chairman of Renishaw plc, the UK's largest supplier of metrology equipment.

[5][1] The company floated on the Unlisted Securities Market in 1983, and gained a full listing the following year.

[8] In 2018, McMurtry stepped down as chief executive of Renishaw and was replaced by marketing and sales director William Lee.

[9] On 2 March 2021, McMurtry, along with John Deer, indicated that they wished to dispose of their entire holdings in Renishaw, comprising some 53% of the shares, as 'we recognise that neither of us is getting any younger'.

The Renishaw board then announced that it was launching a formal sale process for the entire company.

[11] In June 2024, McMurtry stepped down as executive chairman of Renishaw and remained on the board as a non-executive director.

[12] According to the Sunday Times Rich List 2024, with a net worth of £1.2 billion, McMurtry was the 135th richest person in the UK.