DYU is a three-letter acronym with the meanings:
Dayeh University, a university in Taiwan D'Youville University, a university in Buffalo, New York Design Your Universe, an album by Epica Dushanbe Airport (IATA code), the airport in Dushanbe, the capital city of Tajikistan Dingyuan railway station, China Railway pinyin code DYU
dyu is the ISO 639-2 and ISO 639-3 language code for Dyula language (in West Africa)