Portable Cross; obverse: Crucified Christ with Virgin, Saints John the Evangelist and Francis; reverse: Crucified Christ with Saints Michael, Paul, Peter, and Louis of Toulouse

Luca di Tommè was an Italian painter active between 1356 and 1389 in Siena. He worked in the style established by earlier Sienese painters Duccio, Simone Martini, Pietro Lorenzetti and Ambrogio Lorenzetti. More than 50 works have been attributed to him. This large output contributed to the long-term survival of the decorative Sienese style well into the 15th century.