Alpha Sigma Phi, Pi Chapter, represents the best of Greek life at CU Boulder. We are a community of gentlemen who dedicate ourselves to bettering our community by bettering ourselves.

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We pride ourselves on our philanthropic efforts. In 2015 we  teamed up with the rap group Zion I to benefit RAINN and held our 3rd annual "Alpha Sigma Phry" benefitting Homes for Our Troops. Overall, we raised over $11,000 for some great causes over the last year.



Alpha Sigs know that academics comes first. We have an in-house tutoring system which pairs brothers together based on their majors and expertise. In 2015 Alpha Sig improved more academically than any other chapter in Boulder, surpassing the all men's average at CU.

Community Service

Our brotherhood would not be the same without our incredible community. Alpha Sig has teamed up with Boulder Open Space, Community Food Share, and iTHRIVE to make an impact on our local area as well as organizing hill cleans to keep the Hill looking great.

Bettering the man is more than bettering the self.


In Boulder, Alpha Sig has made a difference through service efforts to better our community. Apart from regular neighborhood clean ups, we have done our part to help make Boulder a better place. In the wake of the 2013 Colorado floods, the fraternity volunteered its time and energy to assist in cleanup efforts in the Boulder County area.



Alpha Sigma Phi is committed to bettering the world.


Alpha Sigma Phi is committed to bettering the world through the efforts of the better men we create. We commit our energy towards philanthropic endeavors and community service.

Alpha Sigma Phi is officially partnered with five national nonprofit organizations:

RAINN RAINN created and operates the National Sexual Assault Hotline and frequently reaches millions with important information on sexual violence prevention.

Aware Awake Alive Aware Awake Alive prevents loss of life due to alcohol poisoning by educating teens, young adults, and parents on the dangers and symptoms of alcohol overdose.

Humane Society The largest animal advocacy organization in the world counting more than 11 million Americans among its members and supporters.

Big Brothers Big Sisters of America The nation's premiere donor and volunteer-supported youth mentoring organization.

Homes for our Troops Homes for our Troops assists severely injured Veterans and families by raising money, providing building materials and professional labor, and coordinating the process of building a home for maximum freedom of movement and the ability to live more independently.