3.
Honolulu International Airport has six runways.
there are 5 runways.
Changi Airport has two parallel runways, 02L/20R and 02C/20C.
Dallas/Fort Worth International Airport (IATA: DFW, ICAO: KDFW) has 7 main runways
One - 14 / 32
There are 5 runways at Toronto Pearson International.
Igi airport with its 3 runways operates around 600 flight in a day
Heathrow has 2 runways which run east-west and a few years ago there was a debate as to whether a third runway should be built.
ahmedabad airport (VAAH) has one runway vectored for take off and landings at 23 and 05. The ILS is active only on runway 23.
Manchester Airport (MAN/EGCC) in the UK has 2 runways: 05L/23R - this is the original runway 05R/23L - this runway is the airport's 2nd runway and was opened in 2001 Runway numbers correspond to their magnetic headings to the nearest 10 degrees (so runway 23 faces approximately 230 degrees magnetic). Due to the nature of constantly changing magnetic variation runways occasionally require re-designating. As a result of this on 07/06/2007 Manchester re-designated their runways from 06L/24R and 06R/24L to 05L/23R and 05R/23L.
I'd say 3 or 4 - follow the Google Maps link below and take a look yourself.
Vietnam has four runways