2019 Copa Libertadores group stage
The 2019 Copa Libertadores group stage was played from 5 March to 9 May 2019. A total of 32 teams competed in the group stage to decide the 16 places in the final stages of the 2019 Copa Libertadores.
Draw
The draw for the group stage was held on 17 December 2018, 20:30 PYST, at the CONMEBOL Convention Centre in Luque, Paraguay.
Teams were seeded by their CONMEBOL ranking of the Copa Libertadores as of 15 December 2018, taking into account the following three factors:
- Performance in the last 10 years, taking into account Copa Libertadores results in the period 2009–2018
- Historical coefficient, taking into account Copa Libertadores results in the period 1960–2008
- Local tournament champion, with bonus points awarded to domestic league champions of the last 10 years
For the group stage, the 32 teams were drawn into eight groups of four containing a team from each of the four pots. Teams from the same association could not be drawn into the same group, excluding the four winners of the third stage, which were allocated to Pot 4 and whose identity was not known at the time of the draw, and could be drawn into the same group with another team from the same association.
| Pot 1 | Pot 2 | Pot 3 | Pot 4 |
;Notes
The following were the four winners of the third stage of qualifying which joined the 28 direct entrants in the group stage.
| Match | Third stage winners |
| G1 |  Atlético Mineiro |
| G2 |  Melgar |
| G3 |  Libertad |
| G4 |  Palestino |
Format
In the group stage, each group is played on a home-and-away round-robin basis. The teams are ranked according to the following criteria: 1. Points ; 2. Goal difference; 3. Goals scored; 4. Away goals scored; 5. CONMEBOL ranking.
The winners and runners-up of each group advance to the round of 16 of the final stages. The third-placed teams of each group enter the Copa Sudamericana second stage.
Schedule
The schedule of each matchday is as follows.| Matchday | Dates | Matches |
| Matchday 1 | 5–7 March 2019 | Team 4 vs. Team 2, Team 3 vs. Team 1 |
| Matchday 2 | 12–14 March 2019 | Team 2 vs. Team 3, Team 1 vs. Team 4 |
| Matchday 3 | 2–4 April 2019 | Team 2 vs. Team 1, Team 4 vs. Team 3 |
| Matchday 4 | 9–11 April 2019 | Team 2 vs. Team 4, Team 1 vs. Team 3 |
| Matchday 5 | 23–25 April 2019 | Team 3 vs. Team 2, Team 4 vs. Team 1 |
| Matchday 6 | 7–9 May 2019 | Team 1 vs. Team 2, Team 3 vs. Team 4 |
;Notes
Groups
Group A
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Group B
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Group C
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Group D
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Group E
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Group F
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Group G
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Group H
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