| Election Name: | 1931 Icelandic parliamentary election |
| Country: | Kingdom of Iceland |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1930 |
| Election Date: | 12 June 1931 |
| Next Election: | 1933 |
| Seats For Election: | All 28 seats in the Lower House and 8 of 14 seats in the Upper House of Althing |
| Turnout: | 78.25% |
| Heading1: | Upper House |
| Leader1: | Jón Þorláksson |
| Party1: | Independence Party (Iceland) |
| Last Election1: | new |
| Seats1: | 6 |
| Percentage1: | 43.82 |
| Leader2: | Tryggvi Þórhallsson |
| Party2: | Progressive Party (Iceland) |
| Last Election2: | 6 |
| Seats2: | 7 |
| Percentage2: | 35.92 |
| Leader3: | Jón Baldvinsson |
| Party3: | Social Democratic Party (Iceland) |
| Last Election3: | 3 |
| Seats3: | 1 |
| Percentage3: | 16.08 |
| Heading4: | Lower House |
| Leader4: | Jón Þorláksson |
| Party4: | Independence Party (Iceland) |
| Last Election4: | new |
| Seats4: | 9 |
| Percentage4: | 43.82 |
| Leader5: | Tryggvi Þórhallsson |
| Party5: | Progressive Party (Iceland) |
| Last Election5: | 13 |
| Seats5: | 16 |
| Percentage5: | 35.92 |
| Leader6: | Jón Baldvinsson |
| Party6: | Social Democratic Party (Iceland) |
| Last Election6: | 3 |
| Seats6: | 3 |
| Percentage6: | 16.08 |
| Prime Minister | |
| Before Party: | Progressive Party (Iceland) |
| After Party: | Progressive Party (Iceland) |
Parliamentary elections were held in Iceland on 12 June 1931.[1] Voters elected all 28 seats in the Lower House of the Althing and eight of the fourteen seats in Upper House.[2] The Progressive Party emerged as the largest party in the Lower House.