Yes, Gabriel is an angel mentioned in the Bible. He appears in both the Old and New Testaments.
* Old Testament: He appears in the Book of Daniel, where he explains Daniel's visions (Daniel 8:16, 9:21).
* New Testament: He appears to Zechariah to announce the birth of John the Baptist (Luke 1:11-20) and to Mary to announce the birth of Jesus (Luke 1:26-38).
In the Bible, Gabriel is often associated with delivering important messages from God.