Together, We are Defenders of Potential


Big Brothers Big Sisters is the oldest, largest, and most successful youth mentoring organization in the U.S. We create and support one-to-one mentoring relationships that ignite the power and promise of youth.

Big Brothers Big Sisters is not a place. We are a relationship.

Through the proven benefits of mentorship, we change the lives of children for the better, forever. And we can't do it without you.

Learn about our programs and how you can get involved today.


Join us IN-PERSON for the 2021 Run 4 Kids 5k Walk/Run on Saturday August 14th at Rentschler Forest MetroPark! The event will feature a chip-timed 5k, a kids' fun run obstacle course, superhero costume contest, and raffle prizes. Registration is FREE! Click here to learn more and register today!



During the COVID-19 pandemic, our office in Hamilton remains open with limited in-person staffing and restrictions for visitors, including wearing a mask. We are still available to receive applications for Bigs and Littles, to conduct virtual and in-office interviews, to provide match support, and to receive donations and event sponsorships. For assistance reaching a specific staff member, call 513-867-1227, or email the staff member directly. Staff members' emails and extensions are listed on the staff contact webpage. When you leave a message, the staff member will receive an email with the contents of your message, and will return your call as soon as possible from outside the office.

We continue to monitor the evolving conditions in Butler County and will adjust our office staffing and visitor procedures according to health and safety guidelines. Thank you for your continued patience and understanding.

When children and teens have the influence of a caring adult, they are more likely to avoid risky behaviors and to focus on academics. Today's youth face a variety of challenges, and being matched with a Big Brother or Big Sister can help them navigate these challenges and reach their potential.