2018–19 Denizlispor season

The 2018–19 season was the 52nd season of Denizlispor in existence and the club's 34th season in the TFF First League. In addition to the domestic league, Denizlispor participated in this season's edition of the Turkish Cup. The season covers the period from July 2018 to 30 June 2019.

On 12 May 2019, Denizlispor secured promotion back to the Süper Lig following a 6–0 home win over Kardemir Karabükspor. With a 5–2 away win over İstanbulspor on 18 May 2019, Denizlispor were confirmed as champions.

Squad

 * colspan=12 align=center|Players sold or loaned out after the start of the season
 * colspan=12 align=center|Players sold or loaned out after the start of the season