| Arturo Longton | |
| Office1: | Governor of Marga Marga Province |
| Term Start1: | 17 March 2010 |
| Term End1: | 16 November 2012 |
| Successor1: | César Molina |
| Office2: | Member of the Chamber of Deputies of Chile |
| Constituency2: | 12th district |
| Term Start2: | 11 March 1990 |
| Term End2: | 11 March 2006 |
| Successor2: | Amelia Herrera Silva |
| Office3: | Mayor of Valparaíso |
| Term Start3: | 1 September 1987 |
| Term End3: | 1 June 1988 |
| Predecessor3: | Francisco Bartolucci |
| Successor3: | Alejandro Navarrete Pinochet |
| Office4: | Mayor of Quilpué |
| Term Start4: | 1983 |
| Term End4: | 1 September 1987 |
| Predecessor4: | Guido Olguín Ossandón |
| Successor4: | Fernando Márquez Espinoza |
| Birth Date: | 25 June 1948 |
| Birth Place: | Limache, Chile |
| Death Place: | Quilpué, Chile |
| Party: | National Renewal |
| Spouse: | Amelia Herrera Silva |
| Children: | Andrés Longton Arturo Longton Herrera |
| Alma Mater: | Pontifical Catholic University of Valparaíso |
| Profession: | Lawyer |
Arturo Longton Guerrero (25 June 1948 – 3 July 2015) was a Chilean lawyer and politician. He served as the first Governor of Marga Marga Province from 2010 to 2012.
Longton was born in Limache on 25 June 1948. In 1983, he was elected mayor of Quilpué until 1987, when he assumed the mayorship of Valparaíso. He served in this capacity for one year. Representing the National Renewal, Longton was a deputy of the Chamber of Deputies of Chile for the 12th district between 1990 and 2006. In 2010, he was appointed by President Sebastián Piñera as the first governor of Marga Marga Province, a position he held until 16 November 2012.[1]
On 3 July 2015, Longton was found dead in his apartment in Quilpué, Chile, at the age of 67. The suspected cause of death was cardiac arrest. He is survived by his wife Amelia Herrera, who is also a politician; sons Arturo and Andrés Longton; and daughter Amelia Longton.[1]