The Yellow Line (Arabic: المسار الأصفر) or Line 4 is one of the Riyadh Metro network in Riyadh, Saudi Arabia.

[1][2][3][4] It runs from King Khalid International Airport to the King Abdullah Financial District (KAFD).

It has 9 stations and 4 interchange stations, covering 29.6 km.

It was built by a consortium of FCC, Atkins, Alstom, Samsung C&T, Strukton and TYPSA (Tecnica Y Proyectos).

[3][5]