The name Brennon is a baby boy's name that has multiple origins, including Irish, Celtic, and Gaelic. The principal meaning of the name is Prince or teardrop. The name Brennon is also and English surname. Other ways to spell Brennon are Brenen and Brennan. People named Brennon are very cooperative and considerate individuals. They often have a tendency to sense the feelings of other people surrounding them. They are peace-minded individuals. The moon sign associated with the name Brennon is Taurus. The name Brennon has an Earth element and Venus as a ruling planet.