Euan Michael Ross Geddes, 3rd Baron Geddes (born 3 September 1937) is a British Conservative peer and politician and current deputy speaker of the House of Lords.

He studied history at Gonville and Caius College, Cambridge, where he graduated as a Bachelor of Arts (BA) in 1961; as per tradition, his BA was later promoted to a Master of Arts (MA Cantab) degree.

On 3 September 1958, he transferred to the Supply Branch of the Royal Naval Reserve with the rank of sub lieutenant.

[6] Lord Geddes has been married twice, first to Gillian Butler in 1966 and, after her death in 1995, to Susan Margaret Carter in 1996.

He has two children by his first wife, one daughter and one son, his heir James George Neil Geddes.