Matthias Steinl (otherwise Steindel, Staindle, Steindl or Stinle) (c. 1644–18 April 1727) was an Austrian painter, architect and designer, and one of the country's best known Baroque sculptors. Together with Johann Bernhard Fischer von Erlach (1656–1723) and his rival Johann Lukas von Hildebrandt (1668–1765), Steinl may be considered one of the most influential architects to introduce the High Baroque style to Austria. The Victoria and Albert Museum in London has one of his earliest identified sculptures, an ivory statuette of a triton (c.1670-1675).