The 2026–27 Liga MX season marks the 80th professional season of Mexico's top-flight football, split into the Apertura 2026 and Clausura 2027 tournaments, each featuring the same 18 clubs. A major storyline is the return of Atlante to the top tier after 12 years, having acquired the registration of Mazatlán. The Apertura 2026 kicks off on July 16, 2026, with Cruz Azul as defending champions, and notably, the play-in round has been permanently eliminated (following its suspension due to the 2026 FIFA World Cup calendar), meaning the top eight teams advance directly to the quarterfinals. The 2026 Leagues Cup will only cause a one-weekend break for its group stage (August 4–13), with the final on September 6, without halting the league that weekend. Relegation has been suspended indefinitely, so the coefficient table is now used purely for statistical purposes, eliminating the fines previously paid by bottom-placed clubs. Early in the tournament, Eugenio Pizzuto scored the first goal of the season for Atlante against Necaxa, while Querétaro led in yellow cards with six.