This is a list of the 63 members of the Althing (Icelandic Parliament), from 2017 until 2021.
| National party | Chairperson(s) | Seats | ± 2016 | |
|---|---|---|---|---|
| Independence Party | Bjarni Benediktsson | 5 | ||
| Left-Green Movement | Katrín Jakobsdóttir | 1 | ||
| Progressive Party | Sigurður Ingi Jóhannsson | |||
| Social Democratic Alliance | Logi Már Einarsson | 4 | ||
| Centre Party | Sigmundur Davíð Gunnlaugsson | New | ||
| Pirate Party | Collective leadership | 4 | ||
| People's Party | Inga Sæland | 4 | ||
| Reform | Þorgerður Katrín Gunnarsdóttir | 3 |
| Candidates selected for the 9 leveling seats (L1-L9 are first apportioned at national level to parties, then to the relative strongest constituency of the party, and finally given to its highest ranked runner-up candidate) | Leveling seats won by party | Reykjavik North | Reykjavik South | Southwest | Northwest | Northeast | South |
|---|---|---|---|---|---|---|---|
| (party vote share divided by won local seats +1) | |||||||
| Independence Party (D) | 5.65% | 7.60% | 6.18% | 8.17% | 6.77% | 6.30% | |
| Left-Green Movement (V) | 5.38% | 6.30% | 4.53% | 8.9% | 6.63% | 5.90% | |
| Progressive Party (B) | 5.30% | 4.05% | 3.95% | 6.13% | 4.73% | 6.20% | |
| Social Democratic Alliance (S) | L5 | 6.40% | 6.50% | 6.05% | 4.85% | 6.95% (L5) | 4.80% |
| Centre Party (M) | L4, L8 | 7.00% | 7.60% (L4) | 4.75% | 7.10% (L8) | 6.20% | 7.15% |
| Pirate Party (P) | L1, L3, L9 | 6.80% (L3) | 5.70% (L9) | 4.15% | 6.80% | 5.50% | 7.10% (L1) |
| People's Party (F) | L2, L6 | 7.10% (L2) | 4.10% | 6.50% (L6) | 5.30% | 4.30% | 4.45% |
| Reform Party (C) | L7 | 4.20% | 4.25% | 4.75% (L7) | 2.50% | 2.10% | 3.10% |