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 Little Sister taking a selfie on the Mass Ave bridge, overlooking Boston. They are participants in our mentoring programs for girls.

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.

Governor-elect Charlie Baker posing with Big Sisters and Little Sisters at Big Sister's annual Big In Boston dinner at the Museum of Fine Arts

Recent Event: Big in Boston

Date: November 8, 2014

Location: Museum of Fine Arts, Boston

Honoring: Jack Connors, Jr.

Fashion Show
Featuring select styles from Bloomingdale's Spring 2015 collection & celebrity guest models.

News Events

  • News
  • 02/03/2015
  • Deborah Re, Pinnacle Award Winner
  • The Greater Boston Chamber of Commerce honors CEO Deborah Re with the Pinnacle Award for Achievement in Management in the nonprofit sector.
  • Blog
  • 11/06/2014
  • It's the Little Things
  • Current and former Big Sisters share their stories through The BIG Picture blog series.
  • Fundraiser
  • 2015 Fashion Show to benefit Big Sister
  • Make a Statement: Join us for a Fashion Show to benefit Big Sister Boston featuring select styles from Bloomingdale's and celebrity guest models!


What Big Sister Means to Me

Hear what Big Sister means to the women and girls in our mentoring programs. Thank you, FleishmanHillard for creating this inspiring video! Help us get #Girls2Great


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.


Last year, girls and women made the headlines. We applauded the selection of Malala Yousafzai as our Nobel Peace Prize laureate, and were concerned with the rise of campus violence against women. We were encouraged to learn that pay equity among women is increasing in many countries, and were enraged by the kidnapping of more than 200 girls in Nigeria. Although we may not directly impact girls and women nationally or internationally, we do work together to create a stronger community for the girls in our region. Read on...