Anton Praetorius (1560 – 6 December 1613) was a German Calvinist pastor who spoke out against the persecution of witches (witchhunts, witchcraft trials) and against torture.
Praetorius was so impressed by the Great Wine Barrel in Heidelberg Castle that he published a poem with the title "Vas Heidelbergense" in October 1595, praising its size as an apparent proof of the superiority of the Calvinist religion.
In his poem on Wolfgang Ernst, Count of Ysenburg, Büdingen and Birstein ("De pii magistratus officio"), he asked the Christian governments for a reformation of nation and church along the principles of the Bible and the Calvinist faith.
In 1602, he made a contribution to the discussion about the interpretation of the Last Supper and the Sacraments in his book De Sacrosanctis novi foederis Jesu Christi.
According to the court records, Reverend Praetorius was so upset about the torture of the accused women that he pressed for a stop in the trial against the last surviving woman.