| Gianluca Susta | |
| Office: | Member of the Italian Senate |
| Term Start: | 15 March 2013 |
| Term End: | 22 March 2018 |
| Office2: | Vice-President of Piedmont |
| Term Start2: | 5 April 2005 |
| Term End2: | 9 April 2010 |
| Office3: | Member of the European Parliament |
| Term Start3: | 2006 |
| Term End3: | 2013 |
| Office4: | Mayor of Biella |
| Term Start4: | 14 December 1992 |
| Term End4: | 28 June 2004[1] |
| Predecessor4: | Luigi Petrini |
| Successor4: | Vittorio Barazzotto |
| Birth Date: | 10 April 1956 |
| Birth Place: | Biella, Piedmont, Italy |
| Party: | Christian Democracy (1974-1994) Italian People's Party (1994-2002) The Daisy (2002-2007) Democratic Party (since 2007) |
| Alma Mater: | University of Turin |
| Profession: | lawyer |
Gianluca Susta (born 10 April 1956, Biella) is an Italian politician and a member of the Italian Senate, to which he was elected in February 2013. Previously, he served as Mayor of Biella from 1992 to 2004 and was a member of the European Parliament from 8 May 2006, when he took up a seat vacated after the 2006 Italian general election, until his election to the Italian Senate. He represents Margherita within the ALDE parliamentary group and supports a pro-European stance by his signing the Spinelli Group Manifesto.