Yes, several missions went to the moon after Apollo 11. There were a total of six Apollo missions that landed on the moon:

* Apollo 11 (1969): The first successful landing on the moon.

* Apollo 12 (1969): Landed near Surveyor 3, a robotic probe.

* Apollo 14 (1971): Explored the Fra Mauro highlands.

* Apollo 15 (1971): First mission to use a lunar rover.

* Apollo 16 (1972): Explored the Descartes highlands.

* Apollo 17 (1972): The last Apollo mission to land on the moon.

So while Apollo 11 was a historic first, it wasn't the last time humans walked on the moon.