Real World article
(written from a Production point of view)

Paul McCartney was a Human which along with John Lennon was the answer to the question "Identify the 20th century Earth composers of the following musical progression" in Spock's skill dome environment in Star Trek, at least according to the script. In the finished movie, this reference seems at least inaudible among the many voices in the center, or might have been cut entirely.

The duo was also cited as an inspiration for the Kirk-Spock relationship by Alex Kurtzman and Roberto Orci.

The McCartney-written song "Let it Be" was quoted on the Dedication plaque of the USS Sutherland.