Alvise Badoer (c. 1483 – 7 January 1554) was a Venetian patrician, lawyer, administrator and diplomat. He played a major role in the Ottoman–Venetian War of 1537–1540. He advocated for and helped arrange the Holy League in 1537–1538, took command of Venetian Dalmatia in 1538–1539 and negotiated the peace treaty in 1540.