Richard Arnold was a Starfleet officer in the 24th century. He was a captain in 2363.

In 2353, he was listed as a Starfleet Operational Support Services officer on a directory placard in Starbase 32, Maxia sector. His office was located in room #35871. (TNG: "Violations", directory)

In 2368, he was listed as a Warp Technologies Development Group officer on the second version of the dedication plaque of the USS Enterprise-D. (TNG: "Silicon Avatar", dedication plaque)

This character was only mentioned in writing.
He was named after production staff associate Richard Arnold.