Vallabhbhai Patel, the first Deputy Prime Minister of India was referred to as Sardar Patel; he is also now known as the "Iron Man of India".
In Persian, Sardar i-Azam was occasionally used as an alternative title for the Shahanshah's Head of government, normally styled Vazir i-Azam, notably in 1904-06 for a Qajar prince, HRH, the Prince Major General Abdol Majid Mirza.