Uthman was conspicuous for his strong moral character. He was handsome and wealthy, and many women were attracted to him, but he never touched a woman beyond wedlock. In the immoral society of Makkah in the age of ignorance, he led a chaste life. He never touched wine. He did not gamble, and took no part in the frivolities which formed the pastime of the youth of Makkah.

He was a good trader and made ample money out of trade, but he never resorted to unfair practices in trade. He was scrupulously honest, and believed in fair deal. He amassed considerable wealth through honest means. On account of his wealth he came to be known as "Ghan)". In spite of being a millionaire, his way of life was not that of a capitalist. He was a man of simple habits, and did not indulge in a luxurious way of life. He used a greater part of his wealth in helping those in distress. He had a flair for social work. He supported many poor families. He awarded liberal stipends to widows and orphans who had none to support them. He was soft spoken and kind hearted. He had a kind word for every one who came across him. He patronized his relatives, and gave liberal aid to such relatives who were in straitened circumstances.

He enjoyed the friendship of Abu Bakr. Even in the pre-Islamic period he profited from the company of the Holy Prophet. He was much impressed with the personality of the Holy Prophet, and always sought his counsel and guidance. He did not worship the idols in the Kaaba. He had little faith in the superstitious practices in which the people of Makkah indulged. He felt that those who worshipped the idols merely groped in the dark. In his heart of hearts he felt that these lifeless idols could not be expected to control the destinies of mankind. He felt that the center of power lay elsewhere. He had the inner conviction that some day the Truth would dawn in some manifest form.

He was an embodiment of modesty. In spite of his wealth there was no sense of pride in him. He never boasted of anything. He never tried to thrust his opinion on others. He believed in action rather than talk. There was a particular decorum and dignity about him. He was very particular that by his behavior he did not offend any body. On account of his endearing qualities of head and heart, he enjoyed great popularity among the people of Makkah.