Daniel Jenifer (April 15, 1791 – December 18, 1855) was an American lawyer and statesman from Charles County, Maryland.
He was a nephew of Daniel of St. Thomas Jenifer (1723-1790), one of the signers of the U.S. Constitution, and the son-in-law of Congressman John Campbell (1765-1828).
In the early 1830s, he began a political career as a member of the short-lived National Republican Party.
After the end of his time in the US House of Representatives Daniel Jenifer was appointed by President John Tyler as successor to Henry Muhlenberg, the ambassador to Vienna.
In this capacity, he served until 1845, at which time he was replaced by the former congressman from Georgia, William Henry Stiles.