Albert Barnes Commentary 2 Chronicles 26:1

"And all the people of Judah took Uzziah, who was sixteen years old, and made him king in the room of his father Amaziah." — 2 Chronicles 26:1 (ASV)

Uzziah - This form of the name is found consistently in Chronicles (except in 1 Chronicles 3:12) and in the prophets. The writer of the books of Kings prefers the form Azariah. Uzziah has been regarded as a phonetic corruption of the real name, used by the common people.