Baccio d'Agnolo (19 May 1462 – 6 March 1543[1]), born Bartolomeo Baglioni, was an Italian woodcarver, sculptor, and architect from Florence.

[2] He started as a wood-carver, and between 1491 and 1502 did much of the decorative carving in the church of Santa Maria Novella and the Palazzo Vecchio in Florence.

The wooden structure of Santissima Annunziata, an elaborate double-sided altarpiece, was "begun in 1500 on a design by Baccio D'Agnolo".

[3] Having made his reputation as a sculptor he appears to have turned his attention to architecture, and to have studied at Rome, though the precise date is uncertain; but at the beginning of the sixteenth century he was engaged with the architect Simone del Pollaiolo in restoring the Palazzo Vecchio, and in 1506 he was commissioned to complete the drum of the cupola of the church of Santa Maria del Fiore.

The Bartolini palace was the first house to be given frontispieces of columns to the door and windows, previously confined to churches.