The 34-year-old has now officially signed for the Ligue 1 outfit, joining the club on an initial two-year contract with the option to extend it by a further year.
According to Argentinian journalist Ignacio Miguelez, Messi seriously considered an offer from Atletico to join the club this summer, where he could have played alongside former Barcelona teammate and close friend Luis Suarez.
Atletico head coach Diego Simeone is believed to have been personally in charge of the negotiations, however he was not able to convince the six-time Ballon d'Or winner to join.
Messi has left Barcelona after 21 hugely successful years at Camp Nou, as the Catalan club were unable to re-sign the forward due to their severe financial difficulties.
The Argentine, who will join up with compatriot and head coach Mauricio Pochettino at PSG, is expected to line up in a fearsome front three alongside Neymar and Kylian Mbappe this season.
Lazio 
Bologna 
Empoli 
Udinese 
CSKA Moscow 
Rubin 
Slovan Bratislava 
AC Milan 
Sparta Praha 
Atletico Madrid 
Valencia 
Barcelona 
Stade Brestois 29 
Bayer Leverkusen 
Red Bull Salzburg 
Bayern Munich 
Paris Saint Germain 
Inter 
RB Leipzig 
Manchester City 
Feyenoord 
Sporting CP 
Arsenal 
FC Rostov 
Spartak Moscow 
Aston Villa 
Juventus 
Celtic 
Club Brugge 
Dinamo Zagreb 
Borussia Dortmund 
Liverpool 
Real Madrid 
Monaco 
Benfica 
PSV 
Shakhtar Donetsk 
Lokomotiv Moscow 
Dinamo Moscow 
Anderlecht 
FC Porto 
AZ Alkmaar 
Galatasaray 
Dynamo Kyiv 
Viktoria Plzen 
Ludogorets 
Qarabag 
Lyon 
FC Heidenheim 
Chelsea 
FC Midtjylland 
Eintracht Frankfurt 
Manchester Utd 
Bodo/Glimt 
Nice 
Rangers 
Real Sociedad 
Ajax