| Nicolas About | |
| Birth Date: | 14 July 1947 |
| Birth Place: | France |
| Residence: | France |
| Office: | Mayor of Montigny-le-Bretonneux |
| Term Start: | 1977 |
| Term End: | 2004 |
| Successor: | Michel Laugier |
| Constituency: | Montigny-le-Bretonneux |
| Office2: | Senator from Yvelines |
| Term Start2: | 24 September 1995 |
| Term End2: | 23 January 2011 |
| Successor2: | Roselle Cros |
| Constituency2: | Yvelines, France |
| Office3: | President of the Centrist Union Group |
| Term Start3: | 7 July 2009 |
| Term End3: | 23 January 2011 |
| Predecessor3: | Michel Mercier |
| Party: | MoDem |
Nicolas About (born 14 July 1947) is a French politician and anti-cultist from the centrist MoDem. He was a member of the French Senate and President of the Centrist Union group. About was the mayor of Montigny-le-Bretonneux from 1977 to 2004. He was elected senator of Yvelines on 24 September 1995 and reelected on 26 September 2004. With Catherine Picard, he helped draft the About-Picard law on 12 June 2001.