| Competition: | Czech First League |
| Season: | 2017–18 |
| Dates: | 28 July 2017 – 26 May 2018 |
| Winners: | Viktoria Plzeň |
| Relegated: | Vysočina Jihlava Zbrojovka Brno |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Viktoria Plzeň Slavia Prague |
| Continentalcup2: | Europa League |
| Continentalcup2 Qualifiers: | Jablonec Sparta Prague Sigma Olomouc |
| League Topscorer: | Michal Krmenčík (16 goals) |
| Biggest Home Win: | |
| Biggest Away Win: | Zlín 1–5 Mladá Boleslav Zlín 0–4 Jablonec Vysočina Jihlava 0–4 Jablonec Dukla Prague 1–5 Viktoria Plzeň |
| Highest Scoring: | |
| Matches: | 240 |
| Total Goals: | 572 |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
The 2017–18 Czech First League, known as the HET liga for sponsorship reasons, was the 25th season of the Czech Republic's top-tier football league. The defending champions were Slavia Prague, who won their fourth Czech title the previous season.[1] The season began on 28 July 2017 and ended on 26 May 2018.
Viktoria Plzeň made a league record by winning their first 14 league games of the season.[2]
| Team | Manager | Captain | Kit maker | Shirt sponsor | ||
|---|---|---|---|---|---|---|
| data-sort-value="Baník Ostrava" | FC Baník Ostrava |  Bohumil Páník | Milan Baroš | Adidas | MW-DIAS | |
| data-sort-value="Bohemians 1905" | Bohemians 1905 | Martin Hašek | Josef Jindřišek | Adidas | Remal, Eltodo, Lion Sport | |
| data-sort-value="Dukla Prague" | FK Dukla Prague | Jaroslav Hynek | Marek Hanousek | Adidas | Carbounion | |
| data-sort-value="Jablonec" | FK Jablonec | Zdeněk Klucký | Tomáš Hübschman | Nike | Tipgames, CPP, SaM Česká Lípa | |
| data-sort-value="Karviná" | MFK Karviná | Josef Mucha | Pavel Eismann | Adidas | OKD | |
| data-sort-value="Mladá Boleslav" | FK Mladá Boleslav | Jozef Weber | Marek Matějovský | Adidas | Škoda Auto, ŠKO-ENERGO | |
| data-sort-value="Sigma Olomouc" | SK Sigma Olomouc | Václav Jílek | Miloš Buchta | Adidas | Sigma Group, Olomouc, Gambrinus, GEMO Olomouc, Litovel | |
| data-sort-value="Slavia Prague" | SK Slavia Prague | Jindřich Trpišovský | Jiří Bílek | Umbro | CEFC China | |
| data-sort-value="Slovácko" | 1. FC Slovácko | Stanislav Levý |  Veliče Šumulikoski | Nike | Z-Group, Synottip | |
| data-sort-value="Slovan Liberec" | FC Slovan Liberec | David Holoubek | Vladimír Coufal | Nike | Preciosa | |
| data-sort-value="Sparta Prague" | AC Sparta Prague | Pavel Hapal | David Lafata | Nike | Sazka BET | |
| data-sort-value="Teplice" | FK Teplice | Daniel Šmejkal |  Admir Ljevaković | Puma | AGC, Umbro | |
| data-sort-value="Viktoria Plzeň" | FC Viktoria Plzeň | Pavel Vrba | Roman Hubník | Puma | Doosan | |
| data-sort-value="Vysočina Jihlava" | FC Vysočina Jihlava | Ivan Kopecký | Lukáš Vaculík | Adidas | PSJ, Jihlava | |
| data-sort-value="Zbrojovka Brno" | FC Zbrojovka Brno |  Roman Pivarník | Petr Pavlík | Nike | Synerga | |
| data-sort-value="Fastav Zlín" | FC Fastav Zlín | Vlastimil Petržela | Tomáš Poznar | Adidas | Lukrom |
Each team plays home-and-away against every other team in the league, for a total of 30 matches played each.
