Prince Naif/Nayef bin Abdul Aziz (Arabic: الأمير نايف بن عبد العزيز آل سعود‎) is the Second Deputy Prime Minister, 3rd in line of succession to King of Saudi Arabia and long time Minister of Interior of Saudi Arabia. He is one of the six surviving members of the Sudairi Seven, all sons of King Ibn Saud and Princess Hassa bint Ahmad Al Sudairi and who will be third in line for the throne of Kingdom of Saudi Arabia. Born in the city of Taif in 1933, Prince Nayef has held the following government positions:

Prince Nayef's career has had intricate links with that of King Fahd who was his predecessor, and mentor, as Minister of Interior. Trusting Nayef implicitly, Fahd's support consolidated the formidable power of the Ministry and bolstered Nayef into becoming among the most powerful of the Al Sauds. Periods of discord among the Sudairi Seven, especially between King Fahd & Prince Sultan were balanced by Nayef's ability to counter the backroom political skills of Sultan. Leaving fellow Sudairi, and Riyadh Governor, Prince Salman the job of clearing the rubble of the Fahd-Sultan battles, Nayef would assume the leadership mantle on their behalf, giving the appearance to ousiders of their unity and power, while issues were ironed out between his warring older siblings. Fahd's stroke in 1995, and his death in 2005, diluted much of Nayef's political strength within the .

The death of King Fahd on August 1, 2005, and ascension of King Abdullah to the throne made Prince Nayef, technically, the third most powerful man in Saudi Arabia, though he remains, at best, fifth in the Saudi line of succession. He is more active in the government than the nominally senior surviving member of the Sudairi Seven, the elderly and ailing Crown Prince Sultan, though he has delegated much of the day-to-day responsibilities of the Interior Ministry to his brother, Deputy Minister Prince Ahmed and to his son, Assistant Minister for Security Affairs Prince Mohammed bin Nayef.