Arnoldus is a given name. Notable persons with that name include:
Arnoald ( 550 – c. 611), Frankish bishop Arnoldus van Anthonissen (1631–1703), Dutch painter Arnoldus Arlenius (1510s–1582), Dutch humanist philosopher and poet Arnoldus Blignaut (born 1978), Zimbabwean cricketer Arnoldus Bloemers (1792–1844), Dutch painter Arnoldus Clapmarius (1574–1604), German academic, jurist and humanist Arnoldus Johannes Eymer (1803–1863), Dutch painter, draftsman, lithographer and watercolourist Arnoldus Hille (1829–1919), Norwegian bishop Arnoldus Montanus (1625–1683), Dutch teacher and author Arnoldus Vanderhorst (1748–1815), American militia leader
See also Arnaldus
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