Allah is Al-Malik (King or Owner)

Allah is the True Owner (Malik) (of everything and everyone). Allah said,

[هُوَ اللَّهُ الَّذِى لاَ إِلَـهَ إِلاَّ هُوَ الْمَلِكُ الْقُدُّوسُ السَّلَـمُ]

(He is Allah, beside Whom La ilaha illa Huwa, the King, the Holy, the One free from all defects) (59:23).
Also, the Two Sahihs recorded Abu Hurayrah saying that the Prophet said,

«أَخْنَعُ اسْمٍ عِنْدَ اللهِ رَجُلٌ تَسَمَّى بِمَلِكِ الْأَمْلَاكِ وَلَا مَالِكَ إِلَّا اللهُ»

(The most despicable name to Allah is a person who calls himself the king of kings, while there are no owners except Allah.)
Also the Two Sahihs recorded that the Messenger of Allah said,

«يَقْبِضُ اللهُ الْأَرْضَ وَيَطْوِي السَّمَاءَ بِيَمِينِهِ ثُمَّ يَقُولُ: أَنَا الْمَلِكُ، أَيْنَ مُلُوكُ الْأَرْضِ؟ أَيْنَ الْجَبَّارُونَ؟ أَيْنَ الْمُتَكَبِّرُونَ؟»

((On the Day of Judgement) Allah will grasp the earth and fold up the heavens with His Right Hand and proclaim, 'I Am the King! Where are the kings of the earth Where are the tyrants Where are the arrogant')
Also, in the the Glorious Qur'an;

[لِّمَنِ الْمُلْكُ الْيَوْمَ لِلَّهِ الْوَحِدِ الْقَهَّارِ]

(Whose is the kingdom this Day Allah's, the One, the Irresistible.)(40:16).
As for calling someone other than Allah a king in this life, 3-24). :23NNA
r-Rahman (the Most Gracious), Ar-Rahim (the Most Merciful)) We explained these Names in the Basmalah. Al-Qurtubi said, "Allah has described Himself by `Ar-Rahman, Ar-Rahim' after saying `the Lord of the Alamin', so His statement here includes a warning, and then an encouragement. Similarly, Allah said, حRNA ? Allah is Al-Malik (King or Owner)
Allah is the True Owner (Malik) (of everything and everyone). Allah said,

[هُوَ اللَّهُ الَّذِى لاَ إِلَـهَ إِلاَّ هُوَ الْمَلِكُ الْقُدُّوسُ السَّلَـمُ]

(He is Allah, beside Whom La ilaha illa Huwa, the King, the Holy, the One free from all defects) (59:23).
Also, the Two Sahihs recorded Abu Hurayrah saying that the Prophet said,

«أَخْنَعُ اسْمٍ عِنْدَ اللهِ رَجُلٌ تَسَمَّى بِمَلِكِ الْأَمْلَاكِ وَلَا مَالِكَ إِلَّا اللهُ»

(The most despicable name to Allah is a person who calls himself the king of kings, while there are no owners except Allah.)
Also the Two Sahihs recorded that the Messenger of Allah said,

«يَقْبِضُ اللهُ الْأَرْضَ وَيَطْوِي السَّمَاءَ بِيَمِينِهِ ثُمَّ يَقُولُ: أَنَا الْمَلِكُ، أَيْنَ مُلُوكُ الْأَرْضِ؟ أَيْنَ الْجَبَّارُونَ؟ أَيْنَ الْمُتَكَبِّرُونَ؟»

((On the Day of Judgement) Allah will grasp the earth and fold up the heavens with His Right Hand and proclaim, 'I Am the King! Where are the kings of the earth Where are the tyrants Where are the arrogant')
Also, in the the Glorious Qur'an;

[لِّمَنِ الْمُلْكُ الْيَوْمَ لِلَّهِ الْوَحِدِ الْقَهَّارِ]

(Whose is the kingdom this Day Allah's, the One, the Irresistible.)(40:16).
As for calling someone other than Allah a king in this life, then it is done as a figure of speech. For instance, Allah said,

[إِنَّ اللَّهَ قَدْ بَعَثَ لَكُمْ طَالُوتَ مَلِكًا]

(Indeed Allah appointed Talut (Saul) as a king over you.) (2:247),

[وَكَانَ وَرَآءَهُم مَّلِكٌ]

(As there was a king behind them)(18:79), and,

[إِذْ جَعَلَ فِيكُمْ أَنْبِيَآءَ وَجَعَلَكُمْ مُّلُوكاً]

When He made Prophets among you, and made you kings )5:20(.
Also, the Two Sahihs recorded,

«مِثْلُ الْمُلُوكِ عَلَى الْأَسِرَّةِ»

(Just like kings reclining on their thrones)