| Pixels: | 150px |
| Competition: | Division 1 |
| Season: | 2018 |
| Winners: | Västerås SK (Norra) Mjällby AIF (Södra) |
| Promoted: | Mjällby AIF Västerås SK Syrianska FC |
| Relegated: | FK Karlskrona Grebbestads IF Ängelholms FF Husqvarna FF Arameisk-Syrianska IF Assyriska FF Skellefteå FF |
| League Topscorer: | Nikolas Vasic (21 goals, Norra) Robin Strömberg (20 goals, Södra) |
| Highest Attendance: | 5,069 Västerås SK 3–0 Akropolis IF (14 April 2018) |
| Prevseason: | 2017 |
| Nextseason: | 2019 |
The 2018 Division 1, part of the 2018 Swedish football season was the 13th season of Sweden's third-tier football league in its current format. The 2018 fixtures were released in December 2017. The season started on 7 April 2018 and ended on 10 November 2018.
32 teams contest the league divided into two divisions, Norra and Södra. 28 returning from the 2017 season, two relegated from Superettan and two promoted from Division 2. The champion of each division will qualify directly for promotion to Superettan, the two runners-up has to play a play-off against the thirteenth and fourteenth team from Superettan to decide who will play in Superettan 2019. The bottom three teams in each division will qualify directly for relegation to Division 2.
| Team | Location | Stadium | Stadium capacity | |
|---|---|---|---|---|
| Akropolis IF | Stockholm | Spånga IP | 300 | |
| Arameisk-Syrianska IF | Botkyrka | Brunna IP | 1,000 | |
| Assyriska FF | Södertälje | Södertälje Fotbollsarena | 6,700 | |
| BK Forward | Örebro | Trängens IP | 4,700 | |
| Carlstad United | Karlstad | Tingvalla IP | 10,000 | |
| Karlslunds IF HFK | Örebro | Karlslund Arena | 2,000 | |
| FC Linköping City | Linköping | Linköping Arena | 8,500 | |
| Nyköpings BIS | Nyköping | Rosvalla IP | 1,000 | |
| Rynninge IK | Örebro | Grenadjärvallen | 1,500 | |
| Sandvikens IF | Sandviken | Jernvallen | 7,000 | |
| Skellefteå FF | Skellefteå | Norrvalla IP | 1,500 | |
| Sollentuna FK | Sollentuna | Sollentunavallen | 4,500 | |
| Syrianska FC | Södertälje | Södertälje Fotbollsarena | 6,400 | |
| Team TG | Umeå | Tegstunets IP | 1,000 | |
| Umeå FC | Umeå | Umeå Energi Arena | 10,000 | |
| Västerås SK | Västerås | Solid Park Arena | 7,000 |
| Team | Location | Stadium | Stadium capacity | |
|---|---|---|---|---|
| Eskilsminne IF | Helsingborg | Harlyckans IP | 3,500 | |
| FK Karlskrona | Karlskrona | Västra Mark IP | 4,000 | |
| Grebbestads IF | Grebbestad | Siljevi | 1,000 | |
| Husqvarna FF | Huskvarna | Vapenvallen | 4,000 | |
| IK Oddevold | Uddevalla | Rimnersvallen | 10,600 | |
| Kristianstad FC | Kristianstad | Kristianstad Fotbollsarena | 3,000 | |
| Ljungskile SK | Ljungskile | Uddevalla Arena | 5,500 | |
| Lunds BK | Lund | Klostergårdens IP | 5,000 | |
| Mjällby AIF | Hällevik | Strandvallen | 6,750 | |
| Oskarshamns AIK | Oskarshamn | Arena Oskarshamn | 2,000 | |
| Skövde AIK | Skövde | Södermalms IP | 4,500 | |
| Torns IF | Stångby | Tornvallen | 1,000 | |
| Tvååkers IF | Tvååker | Övrevi IP | 1,000 | |
| Utsiktens BK | Gothenburg | Ruddalens IP | 5,000 | |
| Åtvidabergs FF | Åtvidaberg | Kopparvallen | 8,000 | |
| Ängelholms FF | Ängelholm | Ängelholms IP | 5,000 |
The 13th-placed teams of each division meets the best two runners-up from 2018 Division 2 in two-legged ties on a home-and-away basis with the team from Division 1 finishing at home.----Karlslunds IF won 3–2 on aggregate.----
FC Trollhättan won 4–3 on aggregate.----
| Rank | Player | Club | Goals |
|---|---|---|---|
| 1 |  Nikola Vasic | Akropolis IF | 21 |
| 2 |  John Junior | Carlstad United | 17 |
| 3 | Leo Englund | Skellefteå FF | 16 |
| 4 |  Anderson Ponciano | BK Forward | 15 |
| Mathias Ranégie | Syrianska FC | ||
| Alagie Sosseh | AFF / SFC | ||
| 7 | Esat Jashari | FC Linköping City | 14 |
| 8 | Emil Bellander | Sandvikens IF | 13 |
| Christian Kouakou | Nyköpings BIS | ||
| Nicklas Lindqvist | Akropolis IF |
| Rank | Player | Club | Goals | |
|---|---|---|---|---|
| 1 | Robin Strömberg | Ljungskile SK | 20 | |
| 2 | Robin Eliasson-Hofsö | Eskilsminne IF | 19 | |
| 3 | Emil Åberg | Eskilsminne IF | 18 | |
| 4 | Andreas Birgersson | LBK / MAIF | 17 | |
| Robin Book | Utsiktens BK | |||
| Liridon Selmani | IK Oddevold | |||
| 7 | Bubacarr Jobe | Mjällby AIF | 16 | |
| 8 | William Kvist | Oskarshamns AIK | 14 |