H12
रत्न राजमार्ग
Ratna Highway
Ratna Highway in red
Ratna Highway South of Kohalpur
Route information
Maintained by MoPIT (Department of Roads)
Length	113.08 km (70.26 mi)
Major junctions
From	Nepalganj, Nepal
To	Birendranagar, Nepal
Location
Country	Nepal
Highway system
Roads in Nepal
← H11 → H13

Ratna Highway (previously H12) (Nepali: रत्न राजमार्ग) is now a part of NH58 together with Karnali Highway.

Ratna Highway was a highway in western Nepal that crosses the districts of Banke and Surkhet in a south to north direction. The 113.08 km highway starts at Nepalgunj, where it depicts a continuation of National Highway 927 of India and runs towards the North, where it crosses Mahendra Highway at Kohalpur. The highway continues north and leaves the Terai Plains, crosses Babai River and terminates in Birendranagar, from where Karnali Highway continues northwards.^[1][2]