Antonio Jeffries, better known as Tony Rich and The Tony Rich Project, is an American Grammy-award-winning Contemporary singer-songwriter best known for his hit single "Nobody Knows".

"Nobody Knows" is a song by R&B singer Tony Rich from his 1996 debut album, Words. Released as his debut single on November 7, 1995, the song peaked at number two on both the Billboard Hot 100 and Billboard Hot Adult Contemporary Tracks charts. It also became a hit in several other countries, topping the Irish Singles Chart and reaching number two in Australia and Canada, number four in the United Kingdom, and the top 20 in the Netherlands, New Zealand, and Sweden. Rich received a nomination for the 1997 Grammy Award for Best Male Pop Vocal Performance.