Robert H. Justman was a Starfleet officer in the 24th century.
As early as 2363, he was a flag officer with the rank of admiral. (TNG: "Silicon Avatar", dedication plaque)
In 2368, he was listed as a Starfleet Command 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 member Robert H. Justman.