Mount Olivet Cemetery is a cemetery in Frederick, Maryland. The cemetery is located at 515 South Market Street and is operated by the Mount Olivet Cemetery Company, Inc.

On October 4, 1852, a group of Maryland citizens, including then-lawyer Charles Edward Trail, founded the Mount Olivet Cemetery Company.^{[2]: 226–228} The company purchased 32 acres of land, which was designed by James Belden to incorporate walkways and driveways throughout the grounds.^[2]: 227 The cemetery was conceived primarily to provide several of the downtown Frederick churches more room for interments, after their cemeteries became full.^[3] Over time some of these smaller cemeteries were also relocated to Mount Olivet.^{[citation needed]} One of the landmarks of Frederick, the Episcopal graveyard, a family burying ground of some of the most famous personages of Maryland, was sold for commercial purposes. All bodies were moved from the graveyard to Mt. Olivet Cemetery.^{[citation needed]}

Initial shares were sold for US$20, with the intention that after the cemetery was laid out, each share would be exchanged for 12 grave lots.^{[citation needed]} The cemetery was formally established (chartered) in 1854.^[4]: 22 Mrs. Ann Crawford was the first person buried in the cemetery, on May 28, 1854.^[3]

Mount Olivet Cemetery has had many monuments constructed on the grounds since its establishment. These monuments honor significant historical people, events and the men and women who fought in many of the military conflicts the United States has been involved in.

• George Baer Jr., (1763–1834), U.S. Congressman for Maryland's 4th District, 1797–1801 and 1815–1817.^[10]
• Henry Baker (died 1896), member of the Maryland House of Delegates^[11]
• Francis Brengle (1807–1846), a member of the Maryland House of Delegates in 1832, 1834, and 1836, and was elected as a Whig to the Twenty-eighth United States Congress, serving from March 4, 1843, to March 3, 1845.^[12]
• Henry A. Cole (1838–1909), Union colonel in the Civil War^[13]
• James Cooper (1810–1863), U.S. Congressman and Senator from Pennsylvania, Union Army general.^[14]
• Julien P. Delphey (1917–2009), member of the Maryland House of Delegates^[15]
• Robert L. Downing (1857–1944), American Shakespearean stage actor and later preacher
• R. P. T. Dutrow (1828–1877), member of the Maryland House of Delegates^[16]
• Barbara Fritchie (1766–1862), American patriot during the Civil War and the subject of John Greenleaf Whittier's 1864 poem, Barbara Frietchie.^{[17][unreliable source?]}
• Thomas Gorsuch (died 1896), member of the Maryland House of Delegates^[18]
• Peter L. Hargett (1852–1957), member of the Maryland House of Delegates^[19]
• Samuel Hinks (1815–1887), Mayor of Baltimore^[20]
• Ulysses Hobbs (1832–1911), member of the Maryland House of Delegates^[21]
• Thomas Johnson (1732–1819), the first Governor of Maryland, a delegate to the Continental Congress and an Associate Justice of the Supreme Court of the United States.^{[4]: 12 ,[22]}
• Francis Scott Key (1779–1843),^[2]: 227 author of "The Star-Spangled Banner" the national anthem of the United States.^[23] Members of the Key family are interred in the Key family plot in the cemetery.^[4]: 87
• John Ross Key (1754–1821) commissioned officer in the Continental Army, judge, lawyer and the father of Francis Scott Key.^[24]
• Jacob Michael Kunkel (1822–1870),^[2]: 227 served in the Maryland State Senate from 1850–1856 and was elected as a Democrat to the Thirty-fifth and Thirty-sixth Congresses (1857–1861).^[25]
• Charles McCurdy "Mac" Mathias Jr. (1922–2010), served in the US Navy and became a Captain in the Navy Reserve, was Frederick's city Attorney (1954–1959), member of the Maryland House of Delegates (1959–1960), Represented Maryland's 6th district in the United States House of Representatives (1961–1969) and was a United States senator (1969–1987).^[26]
• William P. Maulsby (1815–1894), lawyer, judge, member of the Maryland Senate^[27]
• Roger Nelson (1759–1815),was an American politician who represented the fourth district of Maryland in the United States House of Representatives from 1804 to 1810.^[28]
• John Ritchie (1831–1887), Civil War Brevet Brigadier General and United States Congressman (1871–1873).^[29]
• J. Alfred Ritter (died 1892), member of the Maryland House of Delegates^[30]
• James M. Schley (died 1883), member of the Maryland House of Delegates^[31]
• John A. Steiner (1816–1902), member of the Maryland House of Delegates^[32]
• John B. Thomas (1819–1893), member of the Maryland House of Delegates^[33]
• Milton George Urner (1839–1926), was a United States Congressman from the sixth district of Maryland (1879–1883).^[34]
• Gary L. Utterback (1889–1962), member of the Maryland House of Delegates^[35]
• Charlotte Louise Berry Winters (1897–2007), the last surviving female American veteran of the First World War.^[36]
• Thomas Contee Worthington (1782–1847), served as a captain in the War of 1812 and was a United States representative from Maryland. The nephew of Benjamin Contee.^[37]

• List of cemeteries in the United States