Lorenzo di Pietro (1410 – June 6, 1480), known as Vecchietta, was an Italian Sienese School painter, sculptor, goldsmith, and architect of the Renaissance.
For the high altar of the Church of the Santissima Annunziata, within the Hospital complex, he created a bronze figure of the Risen Christ (signed and dated 1476), which shows the influence of Donatello.
According to Vasari, "This casting, which is admirable, acquired very great fame and repute for him by reason of the proportion and grace that it shows in all its parts; and whosoever observes this work well can see that the design is good, and that the craftsman was a man of judgment and of practised ability.
A bronze tomb statue of Marianus Soccinus the Elder (a noted Sienese jurist) for the church of San Domenico is housed at the Uffizi in Florence.
For the Loggia della Mercanzia, Vecchietta sculpted life-size figures of St. Peter and St. Paul (c.1458-1460), which Vasari praised as "wrought with consummate grace and executed with fine mastery.