The 2018–19 Primeira Liga (also known as Liga NOS for sponsorship reasons) was the 85th season of the Primeira Liga, the top professional league for Portuguese association football clubs.
Porto were the defending champions but finished behind Benfica, who became champions for a record 37th time while equalling their own scoring record of 103 goals in the 1963–64 season.
The weeks leading up to the beginning of the competition were filled with several incidents: Annual awards were announced on 5 July 2019.
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