Adajania was born into a Parsi family and as indicated by his surname hailed from Adajan, a suburb of Surat in Gujarat.

Soon after leaving St. Xavier's College, Bombay, Adajania joined the Indian Army on an emergency commission to fight the 1965 Indo-Pakistani War as a Captain of the 5/9 Gurkha Battalion.

[4][5] Adajania officiated over six Olympic Games (1972 Munich, 1976 Montreal, 1980 Moscow, 1984 Los Angeles, 1988 Seoul, and 1992 Barcelona).

He also brought the prestigious Boxing World Cup to India at a time when international sports of this magnitude were a rarity in the country.

Homi is a well known director of Bollywood films and is the husband of fashion designer Anaita Shroff Adajania.