The Tuen Mun–Chek Lap Kok Link (Chinese: 屯門至赤鱲角連接路, abbreviated as TM–CLKL) is a road project in the New Territories, Hong Kong.

The Northern Connection comprises an undersea tunnel crossing the Urmston Road, linking Tuen Mun to the "Boundary Crossing Facilities" (BCF), an artificial peninsula connected to Hong Kong International Airport.

The estimated cost of the design, site investigation, and construction of the TM–CLKL (including associated works, like land reclamation) is about HK$46.71 billion.

The tunnel portion is a two-lane dual carriageway approximately 5 kilometres long.

[5] Originally scheduled for opening in 2018, completion of the link had been delayed for two years.