Joel Buchanan Danner (1804 – July 29, 1885) was a Democratic member of the U.S. House of Representatives from Pennsylvania.

Joel B. Danner was born in Liberty, Maryland. He engaged in the hardware business and carriage building at Gettysburg, Pennsylvania. He also served as justice of the peace.

Danner was elected as a Democrat to the Thirty-first Congress to fill the vacancy caused by the death of Henry Nes. He resumed his former business pursuits in Gettysburg, where he died in 1885. Interment in Evergreen Cemetery.

• United States Congress. "Joel Buchanan Danner (id: D000045)". Biographical Directory of the United States Congress.
• The Political Graveyard