Nina Tassler, president of CBS Entertainment, made the announcement Wednesday.
"It's simply amazing that a show in its eighth season continues to perform at such an elite level," Tassler said in a statement. "This is a tribute to the hard work of its talented writers, producers and cast for bringing to life such compelling stories and characters with intrigue and humor."
David Stapf, president of CBS Television Studios, called the show "a network phenomenon and a global sensation."
"The show continues to hit audience peaks on CBS and is a top performer in territories around the world," he said.
"NCIS" premiered on CBS in 2003-2004 as a spinoff of the long-running action/legal drama, "JAG."