Henry Lion Oldie or H. L. Oldie (Russian: Генри Лайон Олди, Г. Л. Олди) is the pen name of Ukrainian science fiction and fantasy writers Dmitry Gromov and Oleg Ladyzhensky.

At Eurocon 2006 in Kyiv, the European Science Fiction Society named them Europe's best writers of 2006.

[1] Oldie collaborated with other Russophone Ukrainian writers, such as Andrey Valentinov, Marina and Sergey Dyachenko.

Dmitry Yevgenyevich Gromov (Russian: Дмитрий Евгеньевич Громов; Ukrainian: Дмитро Євгенович Громов, Dmytro Yevhenovych Hromov) was born March 30, 1963, in Simferopol, Crimea, Soviet Ukraine.

(As of August 2017) Novelettes "The Eighth circle of Subway" (1990), "The Monster" (1990), "Tiger" (1990), "Nobody's home" (1990), "Master" (1991), "Broken circle" (1991), "Annabel Lee" (1991) published separately were included in the novellas of the cycle "The Abyss of Hungry Eyes"