Famous Lippards

Most U.S. Lippards are descendants of Conrad Martin Lippard and Anna Maria Martin who immigrated from Palatinate Germany to Philadelphia by way of Rotterdam on the SS Queen Elizabeth in 1738, landing at Philadelphia on September 16. Conrad Martin's son William and grandson John migrated to North Carolina, where most descendants can still be found, but clusters migrated back to Pennsylvania, to Indiana, to Illinois, to Texas, and elsewhere. I've not found a connection between these German Lippards and the English Lippards (if there's a link, it predates 1547) or with the Russians Abraham Lippard (1870-1957) or Isadore Lippard, father of Simon Lippard (1866-1933).

German-Origin Lippards

Mark Lippard, juggler, unicyclist, stilt walker, performer.
Jim Lippard, the "dean of baseball" for Davidson County, NC.

Laley Lippard, freelance artist and stage director and producer
Joy (Lippard) Hanna, teenage Christian rock artist and visionary. "On September 10, 2001, Lippard, an eleven year old visionary wrote her first song applicable to the terrorists [sic] attacks of 9/11. 'I felt God put the words in my heart so I could comfort people affected by the tragedy,' said the young artist. From that day forward, Joy knew music was her tool for evangelism."
Tracy Lippard (1971?-), former Miss Williamsburg; attacked family of a woman pregnant with her (ex?) boyfriend's child with a hammer, convicted of second-degree attempted murder in 1994 (also covered by the New York Times).
Christopher Wayne Lippard (1979?-), killer and ex-fugitive who made America's Most Wanted in 1999.
LaMell Ray Lippard (1967-), Mormon Boy Scout leader and convicted child molester (2002).
Holden James Lippard (1995-), who killed his grandfather after release from this case

English-Origin Lippards

Lucy Rowland Lippard (1937-), art critic, of an English branch of Lippards, descendants of William Leopard, b. 1736, via son James.
Richard Burton Lippard (1943-), of the same English branch of Lippards (William Leopard, via son James).
Allen (Al) Lippard (1915-2002), Fitzgerald Public School Board member, established neighborhood watch in south Warren, Michigan, from the same English branch of Lippards (via William Leopard's son Richard).
Stephen John Lippard, geosciences/petroleum geology professor, Norwegian University of Science and Technology (NTNU)
Hanne Lippard (1984-), performer, filmmaker, writer.

Russian-Origin Lippards

Stephen James Lippard (1940-), chemistry professor at MIT and recipient of the 2004 National Medal of Science, the top U.S. science award, of a Russian branch of Lippards.
Alex Lippard, stage director, playwright, NYC. Son of Stephen J. Lippard.
Joshua J. Lippard, senior counsel for technology, privacy, and security at Abraxas Corporation, a company that sells software to intelligence organizations. He has an A.B. in history from Princeton, J.D. from Boston College Law School, and M.P.P. from John F. Kennedy School of Government at Harvard, was a term member of the Council on Foreign Relations, and was formerly Assistant General Counsel at the FBI and a corporate counsel at Microsoft. Son of Stephen J. Lippard.

Unknown-Origin Lippards

George Lippard (1822-1854), writer, wrote fictional story (1847) about the Liberty Bell being rung to announce the signing of the Declaration of Independence. Cannot trace him back beyond his grandfather, Michael Lippard (1764-1850).
Clarence Lippard, vagabond, Richard Avedon photo subject, August 29, 1983, Sparks, NV
Danny Lippard (?-), designer, musician.
Chris Lippard (?-), film professor at University of Utah.
Brandon Lippard, Los Angeles-area cinematographer
Kathy Lippard Cobb (?-), poet.
Marilyn Lippard, teacher at St. Pius X School, Tulsa, OK, recipient of $500 grant from Dollar Thrifty Automotive Group, Inc.
L.L. Cool J received the "Patrick Lippard Award" from Rock the Vote in 2004, but I haven't been able to find information about who Patrick Lippard is or was (other than he was the first executive director of "Rock the Vote").
Jonathan Lippard, 22, 26 Highland Ave., Danielson, 2:20 p.m., sixth-degree larceny, fraudulent use of ATM card; court date Aug. 19, Danielson Superior Court. (Connecticut, 2004)