2018–19 EHF Champions League group stageThe 2018–19 EHF Champions League group stage began on 12 September 2018 and concluded on 3 March 2019. A total of 28 teams competed for 14 places in the knockout stage of the 2018–19 EHF Champions League.
DrawThe draw for the group stage was held on 29 June 2018.
SeedingsThe seedings were announced on 20 June 2018.
FormatIn each group, teams played against each other in a double round-robin format, with home and away matches. After completion of the group stage matches, the teams advancing to the knockout stage were determined in the following manner:
TiebreakersIn the group stage, teams were ranked according to points (2 points for a win, 1 point for a draw, 0 points for a loss). After completion of the group stage, if two or more teams had the same number of points, the ranking was determined as follows:
#Highest number of points in matches between the teams directly involved; #Superior goal difference in matches between the teams directly involved; #Highest number of goals scored in matches between the teams directly involved (or in the away match in case of a two-team tie); #Superior goal difference in all matches of the group; #Highest number of plus goals in all matches of the group; If the ranking of one of these teams is determined, the above criteria are consecutively followed until the ranking of all teams is determined. If no ranking can be determined, a decision shall be obtained by EHF through drawing of lots.