Eroica Peninsula () is an ice-covered peninsula lying north of Beethoven Peninsula and Mendelssohn Inlet in west Alexander Island. Mapped from trimetrogon air photography taken by Ronne Antarctic Research Expedition (RARE), 1947–48, and from survey by Falkland Islands Dependencies Survey (FIDS), 1948-50. Named by United Kingdom Antarctic Place-Names Committee (UK-APC) after Beethoven's Eroica symphony (1804), in association with Beethoven Peninsula.
This article incorporates public domain material from the United States Geological Survey document "Eroica Peninsula" (content from the Geographic Names Information System).