The 2018 Copa Chile, was the 39th edition of the Copa Chile, the country's national football cup tournament. Santiago Wanderers were the defending champions, but lost to Palestino in the second round of the competition. Palestino went on to become champions after defeating Audax Italiano in the final by an aggregate score of 4–2.
Format
The 2018 Copa Chile is based on a system of direct elimination with double-legged ties, similar to the Copa del Rey. As a novelty, after 6 years, clubs that are members of the Segunda División Profesional were included, and after 8 years, clubs of the ANFA were also included, such as these of Tercera División A and Tercera División B.
Prizes
The champions of this edition earned the right to compete in the 2019 Copa Libertadores, taking the Chile 4 berth. Besides, they also earned the right to play the 2019 Supercopa de Chile. Unlike previous Copa Chile editions, the runners-up were not entitled to a berth to the Copa Sudamericana.
The pairings for the first round were announced by the ANFP on 16 April 2018. The 16 teams from the Segunda División and Tercera División A were drawn against the 16 Primera B teams, according to geographical and safety criteria. The first legs were played on 25, 28–30 April, 2 and 6 May and the second legs were played on 2–3, 5–6 and 16 May 2018.
First leg
Second leg
Second round
In the second round, the 16 winning teams from the previous round were drawn against the 16 Primera División teams which entered the competition at this stage. As in the previous round, the pairings were based on geographical and safety criteria. In each tie, the team from the lower tier hosted the first leg. The pairings for the second round were announced by the ANFP on 18 May 2018, the first legs were played from 9 to 17 June 2018 and the second legs were played from 14 to 21 July 2018.
The draw for the Round of 16 and subsequent phases was held on 28 May 2018. Starting from this round, the order of legs in each tie will depend on the number assigned to the second round tie won by each team, with the team with the highest number in each tie hosting the second leg. The first legs were played from 22 to 24 June 2018 and the second legs were played from 29 June to 2 July 2018.
First leg
Second leg
Quarterfinals
The first legs were played on 7 and 8 July 2018, while the second legs were played on 13 and 14 July 2018.
First leg
Second leg
Semifinals
The first legs were played on 8 September 2018, and the second legs were played on 12 and 13 October 2018.