Koilabas

Koilabas (Nepali: कोइलाबास) is a bazaar town situated in Gadhawa Rural Municipality in Dang Deokhuri District in Province No. 5 of south-western Nepal. The town is situated on the southern edge of the Dudhwa Range of the Siwaliks, at Nepal's border with Uttar Pradesh 5 km from the village Jarwa on the other side. Indian and Nepalese nationals may cross the border unrestricted however there is a customs checkpoint for goods. Koilabas has regular bus service to Tulsipur on the Gorakhpur-Gonda Loop of Indian Railways.

Koilābās Nepali: कोइलाबास
Village Development Committee
Koilābās Location in Nepal
Coordinates: 27°41′50″N 82°31′34″E
Country	Nepal
Province	Province No. 5
District	Dang Deokhuri District
Population  (2001[1])
• Total	1,561
	322 households
Time zone	UTC+5:45 (Nepal Time)

From Koilabas, goods are transshipped over the Dudhwas to Dang and Deukhuri Valleys, then on into hill districts Pyuthan, Rolpa and Salyan. Before Nepal's east-west Mahendra Highway was built in the 1990s, Koilabas was also a transit hub. It was often easier if less direct to use Indian trains to travel east or west to reach other parts of Nepal than to traverse a seemingly endless series of north-south mountain valleys on foot.

Hindi or Awadhi are spoken natively by most inhabitants, with Nepali and Tharu widely understood.