"That's Rock 'n' Roll" is a song written and originally recorded by Eric Carmen in 1976. It became a popular Billboard top 10 hit in 1977 for teen idol Shaun Cassidy.

American pop rock artist Eric Carmen released his version of "That's Rock 'n' Roll" in some nations as the third single from his first eponymous debut album, Eric Carmen. The single's limited release did not include the United States. The song charted at number seven in Denmark. Parts of the song are autobiographical.

Carmen performed the song on the Midnight Special TV program on March 26, 1976.

In 1988, "That's Rock 'n' Roll" was featured as the B side of a subsequent major hit by Carmen, "Make Me Lose Control."

"That's Rock 'n' Roll" was covered in 1977 by American teen idol Shaun Cassidy on his first solo LP, Shaun Cassidy. It was Cassidy's second of three consecutive Top 10 hits.

"That's Rock 'n' Roll" peaked at number three on the U.S. Billboard Hot 100. It was his longest-charting hit, and spent three weeks longer in the Top 40 than did his number one hit, "Da Doo Ron Ron", with a total of six months on the chart. This song became a gold record, as did all of Cassidy's first three single releases.

"That's Rock and Roll" was the first of two major hits written by Carmen and covered by Cassidy, the second being "Hey Deanie". Both songs charted concurrently with Carmen's own hit, "She Did It" from the fall of 1977.

On the Canadian chart, "That's Rock 'n' Roll" reached number one for one week, displacing the 'Star Wars Theme' to take its turn at number one. It was Cassidy's second Canadian number-one hit. It was also Eric Carmen's second composition to reach the top spot, having reached number one a year earlier with a song he performed himself, "Never Gonna Fall in Love Again."

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