The 2018–19 Guam Soccer League (Budweiser Soccer League for sponsorship reasons) is the 30th season of Guam Soccer League, Guam's first-tier professional soccer league.
The season started on 13 October 2018, and concluded on 27 April 2019, with each team playing 21 matches.
[1] A total of eight teams competed in the league, reduced from the previous season of 17 teams.
[2] NAPA Rovers were the defending champions.
Guam U-19 (also known as Manhoben Lalåhi) entered this season.