Holy Magnanimity

There may be others but here are some of the better known saint 'greats.' 


St. Albert the Great 
St. Anthony the Great 
St. Basil the Great 
St. Gertrude the Great 
St. Gregory the Great 
St. Leo the Great
St. Nicholas the Great

There is also St. Athanasius who was given the title of 'the Great' by the Orthodox Church but does not usually have that title in the Catholic Church.

Go here regarding the three pontiff "greats".

Wikipedia "List of People Known as The Great".