Saint Colman or Kolonat (Irish: Colmán; Latin: Colomannus; c. 600 – July 8, 689 AD in Würzburg, Germany) was an Irish-born Christian priest and missionary.

He was a companion of Kilian and Totnan as missionaries to Franconia and Thüringen in Germany.

Kilian told Duke Gozbert that he was breaking Christian scripture by marrying his brother's widow, Geilana.

Geilana was so angry that she sent her soldiers to the main square of Würzburg, where the three missionaries were preaching, and had them beheaded.

He transferred the relics of the three men into the new cathedral which was dedicated to St Kilian.