Portrait of Nicolaus Copernicus
- Creator: Teodor Edward Knorr
- Technique: oil painting on canvas
- Date: 1838
- Description: Portrait of Nicolaus Copernicus by the little-known artist T. Knorr (signature in the central part of the painting, on the right side of the figure) from the mid-19th c. Artistically, it is an unsuccessful travesty of Copernicus' portrait formerly held by the Academic Gymnasium of Toruń
- Location: Copernican Library in Toruń