D. Arakelian was a Starfleet officer in the 23rd century.

In 2285, she was a commander at Starfleet Academy's Starfleet Training Command. Her office, located on the second level of a building, was in room #212. Her rank, name, and office were listed on a directory placard. (Star Trek II: The Wrath of Khan, set artwork)

This character was only mentioned in writing.
She was named after production assistant Deborah Arakelian. The placard was sold on It's A Wrap! sale and auction for US$31.99. [1]