| Honorific-Prefix: | The Right Honourable |
| The Viscount Eccles | |
| Office1: | Member of the House of Lords |
| Status1: | Lord Temporal |
| Term Label1: | as a hereditary peer |
| Term Start1: | 24 February 1999 |
| Term End1: | 11 November 1999 |
| Predecessor1: | The 1st Viscount Eccles |
| Successor1: | Seat abolished |
| Term Label2: | as an elected hereditary peer |
| Term Start2: | 24 March 2005 |
| 1Blankname2: | By-election |
| 1Namedata2: | 24 March 2005 |
| Predecessor2: | The 4th Baron Aberdare |
| Birth Date: | 20 April 1931 |
| Nationality: | British |
| Party: | Conservative |
| Spouse: | Diana Eccles, Viscountess Eccles |
| Children: | The Hon. Alice Eccles The Hon. William Eccles The Hon. Catherine Eccles The Hon. Emily Eccles |
| Alma Mater: | Magdalen College, Oxford |
| Occupation: | Peer and businessman |
John Dawson Eccles, 2nd Viscount Eccles, (born 20 April 1931), is a British Conservative peer and businessman. He is one of the ninety-two hereditary peers elected to remain in the House of Lords after the passing of the House of Lords Act 1999.
The son of the 1st Viscount Eccles and Sybil Dawson, he was educated at Winchester College and Magdalen College, Oxford, where he graduated with a Bachelor of Arts in philosophy, politics and economics in 1954. He served in the 1st Battalion (60th Rifles), King's Royal Rifle Corps, reaching the rank of 2nd Lieutenant.
In 1985, he was appointed a Commander of the Order of the British Empire (CBE); and since 1989 a DSc (Silsoe). On 24 February 1999, he entered his inheritance. Lord Eccles entered the House of Lords upon its reform; however, due to the House of Lords Act, he was soon obliged to vacate his position in the House. He was later invited to election as one of the 92 remaining hereditary peers in a by-election forced by the death of the 4th Baron Aberdare, and returned to the House in 2005.
director from 1968 to 1974
director from 1972 to 1996
director from 1974 to 1988
member from 1976 to 1986, deputy chairman from 1981 to 1985
director from 1977 to 1981
chairman from 1982 to 2004
member from 1989 to 1993
chairman from 1994 to 2004
member from 1982 to 1985, general manager and chief executive from 1985 to 1994.
Lord Eccles married Diana Catherine Sturge 29 January 1955, in Bletchingley, Surrey. They have four children:
Viscountess Eccles was created a life peer in her own right in 1990 as Baroness Eccles of Moulton, and so also sits in the House of Lords. They are one of the few couples who both hold peerages in their own right.