The Incredulity of Saint Thomas is an oil painting on canvas by Matthias Stom, created c. 1640-1649.

The work first appeared in the written record as one of the paintings listed as saved from the 1734 fire at the Royal Alcázar of Madrid; at that time it was thought to be a copy of an original by Guercino.

Another inventory of 1772, this time of the Royal Palace in Madrid, re-attributed it as an autograph work by Stom's teacher Gerard van Honthorst.

Arthur von Schneider first suggested Stom as the work's artist and many years later, in 1985, a catalogue finally restored this attribution.

[2][3] The painting depicts the moment when, according to the Gospel of John, the Apostle Thomas, who doubted that Jesus Christ had been raised from the death, had to put his hand on His wound, and finally was able to believe in the resurrection.