Yoji Kondo

was a Japanese-born American astrophysicist who also wrote science fiction under the pseudonym Eric Kotani. He edited Requiem: New Collected Works by Robert A. Heinlein and Tributes to the Grand Master, and contributed to New Destinies, Vol. VI/Winter 1988—Robert A. Heinlein Memorial Issue (1988), after his friend, writer Robert A. Heinlein, died in 1988.

Kondo also edited the non-fiction book Interstellar Travel & Multi-Generational Space Ships, part of the Apogee Books Space Series.

For his work in the NASA Space program, Kondo was awarded the NASA Medal for Exceptional Scientific Achievement

Yoji Kondo was also an accomplished teacher of Shodokan Aikido and judo.