The three-line system would include 61 stations and cover the entire capital, according to Safat-based Arabic daily newspaper Al Shahed.
A 23.7km line would run from Salwa to Kuwait University, with 19 stations.
A 21km line would run from Hawally, stopping at 27 stations to end in Kuwait City.
A third line would stretch 24km from Kuwait International Airport to Abdullah Al Mubarak area, passing through 15 stations.
The project will be implemented as a public-private partnership and construction is expected to begin in 2017.