Grotrian may refer to:
People Frederick Brent Grotrian (1838–1905) was an English Member of Parliament Herbert Grotrian (1870–1951), English Member of Parliament Walter Grotrian (1890–1954), German astronomer and astrophysicist
Other uses Grotrian (crater), a lunar crater Grotrian baronets, a title in the Baronetage of the United Kingdom Grotrian diagram, in chemistry Grotrian-Steinweg, a German piano brand known as Grotrian in the U.S.