The Purple Line (Arabic: المسار البنفسجي) or Line 6, also known as Violet Line, is one of the six lines in the Riyadh Metro network in Riyadh, Saudi Arabia. It runs in a half-ring from King Abdullah Financial District, passing Imam Muhammad ibn Saud Islamic University, and ending at Prince Saad Ibn Abdulrahman Al-Awal Road. It's mostly elevated except along Sheikh Hassan Bin Hussein Bin Ali Street. The line has 11 stations with 3 interchange stations.

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