What You Don't Know is the debut studio album by country music artist Jon Randall and his first studio album released on the RCA Nashville label.

Because of restructuring within the record company, this album received minimal promotion.

His proposed next album, entitled Great Day to Be Alive, was shelved for the same reasons, although its title track was later a Top 5 hit for Travis Tritt in 2001.

"I Came Straight to You" was previously recorded by Kevin Welch in 1989 and released as a single from his self-titled debut album, and would later be covered by Patty Loveless.

"Tennessee Blues" is a cover of a Bobby Charles song.