| 2025-26 IHSAA Class 1A Baseball State Tournament | Various Cities, IN | Jan 1 |
| 2025-26 IHSAA Class 2A Baseball State Tournament | Various Cities, IN | Jan 1 |
| 2025-26 IHSAA Class 3A Baseball State Tournament | Various Cities, IN | Jan 1 |
| 2025-26 IHSAA Class 4A Baseball State Tournament | Various Cities, IN | Jan 1 |
| 2025 CIF San Francisco Baseball Championships (California) | Various Cities, CA | May 11 - 18 |
| 2025 NCHSAA Baseball State Championship - NEW | Various Cities, NC | Jan 1 |
| 2026 AHSAA Baseball Playoffs (Alabama) | Various Cities, AL | Apr 22 - May 22 |
| 2026 AHSAA Centennial Bank State Baseball Championships (Arkansas) | Various Cities, AR | May 14 - 19 |
| 2026 AIA (Arizona) 4A State Baseball Championships | Various Cities, AZ | May 2 - 21 |
| 2026 AIA (Arizona) 5A State Baseball Championships | Various Cities, AZ | May 2 - 19 |
| 2026 AIA Baseball 1A, 2A, 3A State Championships (Arizona) | Various Cities, AZ | May 2 - 16 |
| 2026 AISA State Baseball Tournament | Various Cities, AL | Apr 21 - May 9 |
| 2026 Allstate Sugar Bowl/LHSAA Baseball State Tournament (Louisiana) | Various Cities, LA | Apr 14 - May 16 |
| 2026 (Arizona) 6A State Baseball Championships | Various Cities, AZ | May 2 - 11 |
| 2026 ASAA Baseball State Championships | Anchorage/Kenai, AK | Jan 1 |
| 2026 CHSAA District & Regional Baseball Tournaments | Various Cities, CO | Apr 28 - May 17 |
| 2026 CHSAA State Baseball Championships | Various Cities, CO | May 1 - 31 |
| 2026 CIAC Connecticut Baseball State Championship | Various Cities, CT | Jan 1 |
| 2026 CIF Central Coast Section Baseball Tournament (California) | Various Cities, CA | May 23 - 30 |
| 2026 CIF Central Section Baseball Championships | Various Cities, CA | May 14 - 30 |
| 2026 CIF LA City Section Baseball Championships | Various Cities, CA | May 12 - 23 |
| 2026 CIF NorCal Baseball Championships | Various Cities, CA | Jun 2 - 6 |
| 2026 CIF Sac-Joaquin Section Baseball Playoffs | Various Cities, CA | May 4 - 23 |
| 2026 CIF San Diego Section Baseball Championships (California) | Various Cities, CA | May 18 - 30 |
| 2026 CIF SoCal Baseball Championships | Various Cities, CA | Jun 2 - 6 |
| 2026 CIF Southern Section Baseball Brackets | Various Cities, CA | May 12 - 30 |
| 2026 DCSAA Baseball State Tournament (District of Columbia) | Various Cities, DC | Jan 1 |
| 2026 DIAA Boys Baseball State Championships (Delaware) | Various Cities, DE | Jan 1 |
| 2026 FHSAA Baseball District Tournaments | Various Cities, FL | Apr 14 - 17 |
| 2026 FHSAA Baseball State Championships | Various Cities, FL | Apr 24 - May 28 |
| 2026 GHSA State Baseball Championships (Georgia) | Various Cities, GA | May 22 - 27 |
| 2026 GIAA State Baseball Championships | Various Cities, GA | May 8 - 28 |
| 2026 IAHSAA Baseball State Championship | Various Cities, IA | Jan 1 |
| 2026 IDHSAA Baseball State Championships (Idaho) | Various Cities, ID | May 14 - 16 |
| 2026 IHSA Illinois Baseball State Tournament (Illinois) | Various Cities, IL | Jan 1 |
| 2026 Kansas Baseball State Championships (KSHSAA) | Various Cities, KS | May 24 - 31 |
| 2026 Maryland Baseball State Championship: MPSSAA | Various Cities, MD | May 7 - 22 |
| 2026 MD MIAA Baseball State Championship | Various Cities, MD | Jan 1 |
| 2026 MHSAA Baseball Championship (Mississippi) | Various Cities, MS | Apr 21 - May 11 |
| 2026 MIAA Baseball State Championship Tournament | Various Cities, MA | Jan 1 |
| 2026 Michigan Baseball State Championship Brackets: MHSAA | Various Cities, MI | Jan 1 |
| 2026 Minnesota State Baseball Tournament: MSHSL | Various Cities, MN | Jan 1 |
| 2026 MPA (Maine) Baseball Championships | Various Cities, ME | Jun 1 - 21 |
| 2026 MSHSAA Missouri Boys Baseball State Championship | Various Cities, MO | May 25 - Jun 2 |
| 2026 NCCSA 1A BASEBALL TOURNAMENT | Various Cities, NC | May 1 - 9 |
| 2026 NCCSA 2A BASEBALL TOURNAMENT | Various Cities, NC | May 1 - 9 |
| 2026 NCHSAA Baseball | Various Cities, NC | May 5 - 30 |
| 2026 NDHSAA Baseball State Tournament (North Dakota) | Various Cities, ND | May 28 - 30 |
| 2026 New Hampshire Baseball State Championship Brackets: NHIAA | Various Cities, NH | Jan 1 |
| 2026 NIAA Baseball Playoffs | Various Cities, NV | Apr 24 - May 16 |
| 2026 NJSIAA New Jersey Baseball State Championship | Various Cities, NJ | Jan 1 |
| 2026 North Coast Section Baseball Championships | Various Cities, CA | May 19 - 30 |
| 2026 Northern Section, CIF BASEBALL PLAYOFFS | Highest Seed, CA | May 12 - 23 |
| 2026 NSAA Class A Baseball Championships | Various Cities, NE | May 11 - 23 |
| 2026 NSAA Class B Baseball Championships | Various Cities, NE | May 11 - 23 |
| 2026 NSAA Class C Baseball Championships | Various Cities, NE | May 11 - 23 |
| 2026 Nusenda Credit Union State Baseball Championships | Various Cities, NM | May 6 - 16 |
| 2026 NYSPHSAA Baseball Championships Presented by Visions FCU | Various Cities, NY | Jun 12 - 13 |
| 2026 OHSAA Baseball State Championships (Ohio) | Various Cities, OH | Jan 1 |
| 2026 Oklahoma Boys Baseball State Championship Brackets: OSSAA | Various Cities, OK | May 6 - 30 |
| 2026 Oregon Baseball State Championship Brackets: OSAA | Various Cities, OR | May 25 - Jun 6 |
| 2026 Philadelphia Public League Baseball Playoffs | Philadelphia, PA | May 5 - 20 |
| 2026 PIAA Baseball Championships (Pennsylvania) | Various Cities, PA | Jan 1 |
| 2026 PPL Baseball Invitational Tournament | Philadelphia, PA | May 6 - 21 |
| 2026 RIIL (Rhode Island) Baseball Championships | Various Cities, RI | May 17 - Jun 10 |
| 2026 SCHSL Baseball State Championships: South Carolina | Various Cities, SC | May 20 - 23 |
| 2026 Tennessee High School Baseball Playoff Brackets: TSSAA | Various Cities, TN | May 19 - 22 |
| 2026 UHSAA 2A Baseball Championships | Various Cities, UT | May 2 - 9 |
| 2026 UHSAA 3A Baseball State Championships | Various Cities, UT | May 7 - 16 |
| 2026 UHSAA 4A Baseball Championships | Various Cities, UT | May 11 - 16 |
| 2026 UHSAA 5A + 6A Baseball State Championships | Various Cities, UT | May 7 - 23 |
| 2026 UIL Texas Baseball Championships | Various Cities, TX | Apr 28 - Jun 6 |
| 2026 VHSL Baseball Region Brackets (Virginia) | Various Cities, VA | May 27 - Jun 6 |
| 2026 VHSL Baseball State Brackets (Virginia) | Various Cities, VA | Jun 9 - 13 |
| 2026 VISAA State Baseball Tournament | Various Cities, VA | May 11 - 16 |
| 2026 VPA (Vermont) Baseball State Championships | Various Cities, VT | May 31 - Jun 14 |
| 2026 Wally Yonamine Foundation Baseball Championship: HHSAA | Various Cities, HI | Jan 1 |
| 2026 Whitaker Bank/KHSAA Baseball (Kentucky) | Lexington, KY | Jan 1 |
| 2026 WIAA Baseball State Championships (Washington) | Various Cities, WA | May 19 - 30 |
| 2026 Wisconsin Boys Baseball State Tournament (WIAA) | Various Cities, WI | Jan 1 |
| 2026 WPIAL Baseball Championship (Pennsylvania) | Various Cities, PA | May 11 - 26 |
| 2026 WVSSAC State Baseball Tournament (West Virginia) | Charleston, WV | Jan 1 |
| CIF OAKLAND SECTION BASEBALL CHAMPIONSHIP 25-26 | Various Cities, CA | May 15 - 20 |
| GAPPS Baseball 2026 | Various Cities, GA | Apr 24 - May 9 |
| Section X Baseball Tournament-2026 | Various Cities, NY | May 26 - Jun 2 |
