BLD could refer to:
Legal
Black's Law Dictionary
Stocks Boral, Australian Securities Exchange symbol BLD
Transportation Baildon railway station, England; National Rail station code BLD Beresfield railway station, Australia; station code BLD Boulder City Airport, Nevada, United States; FAA location identifier BLD (closed c. 1988) Boulder City Municipal Airport, Nevada, United States; IATA airport code BLD (opened 1990)
Other uses Bharatiya Lok Dal, a former Indian political party Blacklite District, an American rock band Blue Lambency Downward, an album by experimental band Kayo Dot BLD, a computer-building service by NZXT Black lung disease, a human disease caused by long-term exposure to coal dust