Big Sisters and Little Sisters dancing together at Big Sister Association of Greater Boston's annual summer picnic on Boston's Long Island

Our Mission Statement

Big Sister Association of Greater Boston's mission is to help girls realize their full potential through positive mentoring relationships with women.

Big Sister and her Little Sister sitting on the steps, enjoying some ice cream on a hot summer day as part of our one-to-one mentoring programs

Become a Big Sister today.

It isn't about being perfect. It's about being present. Find out how to become a Big Sister today.

Volunteers waiting at the starting line to ride bikes for miles throughout Southeastern Massachusetts to benefit girls mentoring programs

Get Involved.

You don't have to be a mentor to make a difference. Join thousands of men and women supporting Greater Boston's girls through volunteerism and philanthropic contributions.

Woman with coffee and jump rope helping girls jump and play together

Enroll a girl today.

If you want your daughter to have a Big Sister, enroll today with our simple online application.

Jack Connors shaking the hand of a Little Sister at Big Sister's annual Big In Boston dinner at the Museum of Fine Arts

Upcoming Event: Big in Boston

Date: November 8, 2014

Location: Museum of Fine Arts, Boston

Honoring: Jack Connors, Jr.

Big in Boston honoring Jack Connors will take place at the MFA Boston to benefit Big Sister.

Big in Boston 2014 
Join community and business leaders at the MFA Boston for Big Sister’s signature gala! Visit our event page for details. 

News Events

  • News
  • 09/22/2014
  • Rodman Ride Reaches Record Success!
  • Big Sister's largest cycling team included Big Sisters, staff, members of the Board of Directors, and friends and family!
  • Fundraiser
  • 2014 Big in Boston
  • Join us at the Museum of Fine Arts on Saturday, November 8 as we celebrate Believe in Girls Honoree Jack Connors, Jr.

Become a Big Sister today!

Got what it takes to help us get #Girls2Great? See how much fun you could be having as a Big Sister.
Thank you to FleishmanHillard for producing this video!


A map of the MBTA that is used to illustrate Big Sister Association's role in the creation and support of girls mentoring programs.

Big Sister raises 85% of our annual revenue through private philanthropy; your donation is critical.

Deborah Re CEO Big Sister provides commentary and insight into global and local news impacting girls and women.


With the hope that words do indeed become actions, please read the Lewis Family Foundation article published in the Boston Globe, urging each of us to embrace peace and lead by example.