The 2026 Major League Baseball regular season starts with Opening Day on Wednesday, March 25, 2026, when the full slate of games begins across the league.

Quick Scoop: When does Major League Baseball start?

For the 2026 season, here’s how the MLB “start” breaks down.

  • Official Opening Day: Wednesday, March 25, 2026, with regular-season games scheduled across MLB.
  • Spring training games: Run through March 24, 2026, as listed on national schedule sites before the shift to regular-season play.
  • Some coverage frames this week as “baseball is back” with Opening Day specifically highlighted as March 25.

So if you’re planning around when Major League Baseball starts , mark your calendar for March 25, 2026 as the true start of the new MLB season.

TL;DR: MLB’s 2026 regular season begins on March 25, 2026 (Opening Day) , right after spring training wraps up.

Information gathered from public forums or data available on the internet and portrayed here.