Peter Anton Alfred Hage (31 December 1803 – 6 March 1872) was a Danish merchant, politician, landowner, patron of the arts and philanthropist.

Intended for an academic career, he stayed in the household of pastor D. P. Smith in Horslunde as part of the preparations for his further studies.

He also contributed to significantly improving the quality by personally guiding landowners and promoting the best varieties on local exhibitions.

Hage contributed to increasing the export of grain to England and also established a large-scale import of colonial goods.

Hage married Frederikke Vilhelmine Faber (18 February 1810 — 23 December 1891) on 28 August 1840 in Stege Church.

His daughters (of which Johanne and Frederikke Elisabeth were adopted from his wife's first marriage) were all married to prominent cultural figures.

Hage made his homes available to political salons and hosted confidential meetings between leading politicians of the time.