Eichhorn is a German surname meaning "squirrel". Notable people with the surname include:
Albert Eichhorn (1856–1926)), historian of religionChristoph Eichhorn (born 1957), a German television actor and directorDavid Max Eichhorn (1906–1986), rabbi, army chaplain and authorDennis Eichhorn (born 1945), American writerJohann Gottfried Eichhorn (1753–1827), German theologianHermann von Eichhorn (1848–1918), German World War I GeneralfeldmarschallJan-Armin Eichhorn (born 1981), German lugerKarl Friedrich Eichhorn (1781–1854), German juristKurt Eichhorn (1908–1994), German conductorLisa Eichhorn (born 1952), American actress, writer and producerMark Eichhorn (born 1960), retired Major League Baseball pitcherSusan Eichhorn Young, Canadian operatic soprano