| Honorific-Prefix: | Hon. |
| A.A. Wijethunga | |
| Honorific-Suffix: | MP |
| Constituency Mp1: | Ratnapura District |
| Parliament1: | Sri Lankan |
| Term Start1: | 2015 |
| Term Start2: | 2001 |
| Term End2: | 2004 |
| Birth Date: | 16 November 1957 |
| Nationality: | Sri Lankan |
| Party: | United National Party |
| Children: | 3 Tharaka Wijethunga |
| Residence: | Ratnapura. |
Abeysinghe Arachchilage Wijethunga (born 16 November 1957) is a Sri Lankan politician. He is a Member of the Parliament of Sri Lanka and former member of the Sabaragamuwa Provincial Council, Ratnapura District UNP Organizer and chief Organizer Kalawana.[1]