Building Community Through Baseball
Fostering teamwork, sportsmanship, and leadership in every child
Come Play With Us!
San Mateo National Little League is a registered 501(c)(3) nonprofit (EIN 52-1245539) proudly serving San Mateo and Peninsula families since 1955, offering youth baseball for children ages 4–14. We are a 100% volunteer-run league, committed to making baseball affordable and accessible for every child.
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Why SMNLL?
Play Free and Have Fun
We want every child to have fun playing baseball, no matter their skill level or the score. From our youngest Wiffle Ball players to our most competitive Majors and Juniors players, baseball should be fun and lighthearted at every level of competition.
Community On and Off the Field
We are more than a baseball league. Children and parents build friendships that last beyond the season — a spirit that shows up on the field and carries over into team BBQs, potlucks, and pickup Wiffle Ball games after the last out.
Targeted Skill Development
SMNLL helps every child grow through dedicated skill-building clinics. Coaches receive support to deliver the highest standard of positive coaching, and our youth and adult umpires receive free training to build leadership and confidence.
Our Seven Divisions: Ages 4–14
Meeting kids where they are in their baseball journey.
Baseball age is your child’s actual age as of August 31 of the season’s calendar year. For Spring 2027, that’s August 31, 2027.
SMNLL at a Glance
Ages 4–14
Proudly Supported By Local Sponsors
SMNLL partners with local businesses that support youth baseball in San Mateo.
