Johannes Nauclerus (Naucler, Naukler) (c. 1425 – May 1, 1510) is a fifteenth-century Swabian historian and humanist.

He was born Johann Vergenhans to a noble (or knighted) man of the same name.

As is the fashion of the time, the family's name had been Latinized, with nauclerus, meaning "skipper," being a close translation of Vergenhans, meaning "ferryman."

The family's coat of arms depicts a man on a sailing ship.

Nauclerus becomes a doctor of law in 1450 and supervisor to Count Eberhard V of Württemberg.

In 1460, he is head of the church in Stuttgart.

He seems to have spent some time in Italy, and had contact with Pope Pius II.

From 1464 to 1465 he teaches at the University of Basel, and in 1466 he is in Rome.

In 1477 he becomes the first rector at the University of Tübingen and subsequently its second chancellor.

In 1502, Nauclerus assumes the office of a judge of the Swabian League, which he holds until the withdrawal of Württemberg from the federation in 1513.