About Big Sister

Our mission is to ignite girls’ passion and power to succeed through positive mentoring relationships with women and enrichment programs that support girls’ healthy development. Ultimately, our vision is to create a mentor-rich community in which every girl has access to the individual nurturing, guidance, and support she needs to become a confident, competent and caring adult. We are a national model for gender-sensitive mentoring for girls which can be replicated in other mentoring programs.

Big Sister Boston is proud to be recognized by Big Brothers Big Sisters of America as the 2015 national Agency of the Year for our substantial growth in the number of children served, quality and length of mentoring relationships, and increased revenues that support our agency financially. We believe that all children can benefit from the care and guidance of an adult mentor and, that when girls’ unique needs are addressed, they thrive with increased confidence, improved relationships and the ability to achieve their individual goals. We are part of a network of more than 300 Big Brothers Big Sisters of America agencies. We are the only affiliate solely serving girls.

For more information about our programs, visit our website.



Each year Big Sister Boston asks our community to provide extra support to some of the families of the Little Sisters we serve.  You can help by making a donation to our Holiday Giving program today.

With your contribution, we will deliver a gift card to a family who has requested assistance, including the Little Sister herself and any children in her home under 18 years old. Gift cards are greatly appreciated by families, especially by parents and caregivers who would like to buy gifts for their children, and for teens who love to shop!


Prefer to give a physical donation?  Click here to view out coat registry and give the gift of warmth to a Little Sister in our community!