Barbara Weiler (born 17 September 1946 in Düsseldorf) is a German politician and was a Member of the European Parliament with the Social Democratic Party of Germany, part of the Socialist Group and sat on the European Parliament's Committee on Internal Market and Consumer Protection.
She joined the SPD in 1970.
She is a substitute for the Committee on Employment and Social Affairs, a member of the Delegation for relations with the countries of
Southeast Asia and the Association of Southeast Asian Nations (ASEAN) and a substitute for the Delegation for relations with Japan.