| Country: | Thailand |
| Previous Election: | 1969 |
| Next Election: | 1976 |
| Seats For Election: | All 269 seats in the House of Representatives |
| Majority Seats: | 135 |
| Election Date: | 26 January 1975 |
| Registered: | 20,242,791 |
| Turnout: | 47.18% |
| Party1: | Democrat Party (Thailand) |
| Percentage1: | 17.23 |
| Seats1: | 72 |
| Last Election1: | 57 |
| Party2: | Social Justice Party (Thailand) |
| Percentage2: | 14.48 |
| Seats2: | 45 |
| Last Election2: | New |
| Party3: | Thai Nation Party |
| Percentage3: | 12.05 |
| Seats3: | 28 |
| Last Election3: | New |
| Party4: | Social Action Party |
| Percentage4: | 10.75 |
| Seats4: | 18 |
| Last Election4: | New |
| Party5: | Social Agrarian Party |
| Percentage5: | 7.53 |
| Seats5: | 19 |
| Last Election5: | New |
| Party6: | Social Nationalist Party |
| Percentage6: | 7.05 |
| Seats6: | 16 |
| Last Election6: | New |
| Party7: | New Force Party |
| Percentage7: | 6.04 |
| Seats7: | 12 |
| Last Election7: | New |
| Party8: | Socialist Party of Thailand |
| Percentage8: | 4.45 |
| Seats8: | 15 |
| Last Election8: | New |
| Party9: | Socialist Front (Thailand) |
| Percentage9: | 3.65 |
| Seats9: | 10 |
| Last Election9: | New |
| Party10: | Peaceful People's Party |
| Percentage10: | 2.76 |
| Seats10: | 8 |
| Last Election10: | New |
| Party11: | National Reconstruction |
| Percentage11: | 2.00 |
| Seats11: | 3 |
| Last Election11: | New |
| Party12: | Thai Party |
| Percentage12: | 1.70 |
| Seats12: | 4 |
| Last Election12: | New |
| Party13: | People's Justice Party (Thailand) |
| Percentage13: | 1.61 |
| Seats13: | 6 |
| Last Election13: | New |
| Party14: | Democracy (Thailand) |
| Percentage14: | 1.54 |
| Seats14: | 2 |
| Last Election14: | New |
| Party15: | Sovereign Party |
| Percentage15: | 0.77 |
| Seats15: | 2 |
| Last Election15: | New |
| Party16: | Labour Party (Thailand) |
| Percentage16: | 0.74 |
| Seats16: | 1 |
| Last Election16: | New |
| Party17: | Agriculturalist Party |
| Percentage17: | 0.63 |
| Seats17: | 1 |
| Last Election17: | New |
| Party18: | Thai Earth Party |
| Percentage18: | 0.50 |
| Seats18: | 2 |
| Last Election18: | New |
| Party19: | Free People's Party (Thailand) |
| Percentage19: | 0.46 |
| Seats19: | 1 |
| Last Election19: | New |
| Party20: | People's Force (Thailand) |
| Percentage20: | 0.36 |
| Seats20: | 2 |
| Last Election20: | New |
| Party21: | Economist Party (Thailand) |
| Percentage21: | 0.33 |
| Seats21: | 1 |
| Last Election21: | New |
| Party22: | Provincial Development Party |
| Percentage22: | 0.16 |
| Seats22: | 1 |
| Last Election22: | New |
| Prime Minister | |
| Before Election: | Sanya Dharmasakti |
| Before Party: | Independent |
| After Election: | Seni Pramoj |
| After Party: | Democrat Party (Thailand) |
General elections were held in Thailand on 26 January 1975. The Democrat Party emerged as the largest party in the House of Representatives with 72 of the 269 seats. Voter turnout was 47%.[1]
Following the elections, Seni Pramoj of the Democrat Party was appointed Prime Minister for a second term by a resolution of the House of Representatives by a vote of 133 to 52 on 15 February 1975, with Pramoj leading a minority government. However, on 6 March 1975 the House of Representatives passed a motion of no confidence by a vote of 152 to 111 with six abstentions. Subsequently a new vote was held to choose a Prime Minister, with Kukrit Pramoj of the Social Action Party elected by a vote of 135 to 59, with 75 abstentions. He took over as Prime Minister on 14 March.