| Country: | Thailand |
| Previous Election: | 1979 |
| Next Election: | 1986 |
| Seats For Election: | All 324 seats in the House of Representatives |
| Majority Seats: | 163 |
| Election Date: | 18 April 1983 |
| Registered: | 24,224,470 |
| Turnout: | 50.76% (6.86pp) |
| Party1: | Social Action Party |
| Percentage1: | 26.78 |
| Seats1: | 92 |
| Last Election1: | 82 |
| Party2: | Thai Nation Party |
| Percentage2: | 23.81 |
| Seats2: | 73 |
| Last Election2: | 38 |
| Party3: | Democrat Party (Thailand) |
| Percentage3: | 15.63 |
| Seats3: | 56 |
| Last Election3: | 33 |
| Party4: | Thai Citizen Party |
| Percentage4: | 9.03 |
| Seats4: | 36 |
| Last Election4: | 32 |
| Party5: | National Democrat Party (Thailand) |
| Percentage5: | 8.06 |
| Seats5: | 15 |
| Last Election5: | New |
| Party6: | Siam Democrat Party |
| Percentage6: | 3.17 |
| Seats6: | 18 |
| Last Election6: | New |
| Party7: | Free People Party |
| Percentage7: | 1.79 |
| Seats7: | 1 |
| Last Election7: | New |
| Party8: | Progress Party (Thailand, 1983) |
| Percentage8: | 1.28 |
| Seats8: | 3 |
| Last Election8: | New |
| Party9: | Social Democratic Party (Thailand) |
| Percentage9: | 1.12 |
| Seats9: | 2 |
| Last Election9: | 0 |
| Party10: | Thai People Party |
| Percentage10: | 0.68 |
| Seats10: | 4 |
| Last Election10: | New |
| Party11: | Independents |
| Leader11: | – |
| Percentage11: | 7.54 |
| Seats11: | 24 |
| Last Election11: | 63 |
| Prime Minister | |
| Before Election: | Prem Tinsulanonda |
| Before Party: | Independent politician |
| After Election: | Prem Tinsulanonda |
| After Party: | Independent politician |
General elections were held in Thailand on 18 April 1983. The Social Action Party emerged as the largest party, winning 92 of the 324 seats. Voter turnout was 51%.[1]