Johns Hopkins (1795–1873), Quaker businessman, abolitionist and philanthropist whose bequest established Johns Hopkins University John Eager Howard (1752–1827), soldier, Governor of Maryland, namesake of Howard County, Maryland William Henry Howell (1860–1945), physiologist who pioneered the use of heparin as a blood anti-coagulant Christopher Hughes (1786–1849), diplomat Sarah T. Hughes (1896–1985), federal judge who swore in Lyndon B. Johnson aboard Air Force One after the Kennedy assassination I Joseph Iglehart (1891–1979), financier Moses Ingram (born 1994), actress J Lillie Mae Carroll Jackson (1889–1975), pioneer civil rights activist, organizer of Baltimore branch of NAACP Debbie Jacobs (born 1955), singer Thomas Jane (born 1969), actor Harry Jeffra (1914–1988), professional boxer, world bantamweight champion Bryant Johnson (born 1981), professional football player with San Francisco 49ers Delano Johnson (born 1988), football player Natalie Joy Johnson (born 1978), film and stage actress, singer and dancer Cyrus Jones (born 1993), former professional football player LaKisha Jones (born 1980), singer Thomas David Jones (born 1955), astronaut with doctorate in planetary science Brian Jordan (born 1967), Major League Baseball player, briefly a pro footballer Jerome H. Joyce(1865–1924) president of Aero Club of Baltimore JPEGMafia (born 1989), music producer, experimental hip hop artist K David Kairys (born 1943), Professor of Law at Temple University School of Law Al Kaline (1934–2020), Major League Baseball player for Detroit Tigers; Hall of Famer, never played in minor leagues John Kassir (born 1957), actor, voice of Crypt Keeper in TV's Tales from the Crypt David Katz (1993–2018), Jacksonville Landing shooter Chris Keating (born 1982), lead singer and songwriter for band Yeasayer William Henry Keeler (1931–2017), Archbishop Emeritus of Baltimore and Cardinal of Roman Catholic Church Stacy Keibler (born 1979), actress, former professional wrestler for WWE Thomas Kelso (Ireland 1784–1878), wealthy merchant, founder of Kelso Home, philanthropist John Pendleton Kennedy (1795–1870), U.S. Secretary of the Navy, Congressman, speaker of Maryland General Assembly, author, led effort to end slavery in Maryland James Lawrence Kernan (1838–1912), Yiddish theater manager and philanthropist Stu Kerr (1928–1994), television personality and weatherman Ernest Keyser (1876–1959), sculptor Stanton Kidd (born 1992), basketball player for Hapoel Jerusalem in the Israeli Basketball Premier League Greg Kihn (born 1950), pop musician David J. Kim (born 1979), publisher of Teen Ink, co-founder of C2 Education J. William Kime (1934–2006), Commandant of U.S. Coast Guard, 1990–1994 D.King (born 1989), rapper Mel Kiper Jr. (born 1960), football analyst Benjamin Klasmer (1891–1949), musician Jim Knipple (born 1977), professional stage