Sianna is a modern name that blends Sienna, the Italian city and the warm earth color, with names such as Gianna and Brianna; read through Sienna it carries the sense "reddish brown" or "from Siena". Some parents also link it to the Welsh Siân, a form of Jane. Sianna has moved from number 3062 in 2000 to a peak of number 2009 in 2024 and ranks number 2152 in 2025.