The name Farah is a girl's name of Arabic origin meaning "happiness". Farah and is often added to lists like Baby Names That Mean Happy and discussed in our forums with posts like "Change One Letter".
From the experts:
Farah is a soft and lovely Arabic name, best known here in this original spelling via the last Empress of Iran, Farah Palavi. It's currently a Top 250 name in both France and the Netherlands, which both have a large Arabic-speaking population, and appears in at least two video games.
The variant spelling Farrah had a brief moment of popularity when Farrah Fawcett burst onto the scene in Charlie's Angels in 1976: her name shot up to Number 177 the following year, and after many years off the charts, it's back at Number 780 thanks to a Teen Mom named Farrah. Farrah Fawcett claimed that her mother made up the name because she thought it went well with their surname.