9906 Tintoretto is a mid-sized Eunomian asteroid that orbits the Sun once every 4.24 years.
Discovered on September 26, 1960 by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld on photographic plates made by Tom Gehrels at the Palomar Observatory with the Samuel Oschin telescope, it was given the provisional designation "6523 P-L". It was later renamed "Tintoretto" after Venetian painter Jacopo Robusti, who was known as "Tintoretto".