Breast Cancer Research Stamp Act of 2001

Breast Cancer Research Stamp Act of 2001 - Amends Federal postal law to provide that any limitation in the Semipostal Authorization Act relating to whether more than one semipostal (a postage stamp issued by the U.S. Postal Service, at a premium, in order to help provide funding for a national public interest) may be offered for sale at the same time, shall not apply to the breast cancer research special stamps issued by the U.S. Postal Service. Extends the Service's authority to issue such stamps through July 29, 2008.

Revises the differential amount of the special rate of postage for the breast cancer research stamp to not less than 15 percent of the regular first-class rate (currently, not to exceed 25 percent of first-class). Requires the special rate to be evenly divisible by five.