Baron Colchester
Image:Charles Abbot, 1st [Baron Colchester by John Hoppner.jpg|thumb|200px|Charles Abbot, 1st Baron Colchester; by John Hoppner.]
Baron Colchester, of Colchester in the County of Essex, was a title in the Peerage of the United Kingdom. It was created on 1 June 1817 for Charles Abbot, Speaker of the House of Commons between 1802 and 1817. He was succeeded by his son, the second Baron. He was a naval commander and Conservative politician. His son, the third Baron, was a barrister, President of the Oxford Union and a Charity Commissioner. He was childless and the title became extinct on his death in 1919.