The word(s) "chief" appears 78 time(s) in 70 verse(s) in Quran in Mohsin Khan translation.

(51) He said: "O chiefs! Which of you can bring me her throne before they come to me surrendering themselves in obedience?"

(52) And there were in the city nine men (from the sons of their chiefs), who made mischief in the land, and would not reform.

(53) And there came a man running, from the farthest end of the city. He said: "O Musa (Moses)! Verily, the chiefs are taking counsel together about you, to kill you, so escape. Truly, I am one of the good advisers to you."

(54) "Put your hand in your bosom, it will come forth white without a disease; and draw your hand close to your side to be free from the fear (which you suffered from the snake, and also your hand will return to its original state). These are two Burhans (signs, miracles, evidence, proofs) from your Lord to Fir'aun (Pharaoh) and his chiefs. Verily, they are the people who are Fasiqun (rebellious, disobedient to Allah).

(55) Fir'aun (Pharaoh) said: "O chiefs! I know not that you have an ilah (a god) other than me. So kindle for me (a fire), O Haman, to bake (bricks out of) clay, and set up for me a Sarh (a lofty tower, or palace) in order that I may look at (or look for) the Ilah (God) of Musa (Moses); and verily, I think that he [Musa (Moses)] is one of the liars."

(56) "But seek, with that (wealth) which Allah has bestowed on you, the home of the Hereafter, and forget not your portion of lawful enjoyment in this world; and do good as Allah has been good to you, and seek not mischief in the land. Verily, Allah likes not the Mufsidun (those who commit great crimes and sins, oppressors, tyrants, mischief-makers, corrupters)."

(57) That home of the Hereafter (i.e. Paradise), We shall assign to those who rebel not against the truth with pride and oppression in the land nor do mischief by committing crimes. And the good end is for the Muttaqun (the pious - See V.2:2).

(58) He said: "My Lord! Give me victory over the people who are Mufsidun (those who commit great crimes and sins, oppressors, tyrants, mischief-makers, corrupters).

(59) And to (the people of) Madyan (Midian), We sent their brother Shu'aib. He said: "O my people! Worship Allah (Alone) and hope for (the reward of good deeds by worshipping Allah Alone, on) the last Day (i.e. the Day of Resurrection), and commit no mischief on the earth as Mufsidun (those who commit great crimes, oppressors, tyrants, mischief-makers, corrupters). [Tafsir At-Tabari]

(60) O mankind! Be afraid of your Lord (by keeping your duty to Him and avoiding all evil), and fear a Day when no father can avail aught for his son, nor a son avail aught for his father. Verily, the Promise of Allah is true: let not then this (worldly) present life deceive you, nor let the chief deceiver (Satan) deceive you about Allah.