The name Izhar is of Arabic origin, derived from the root word "zahar" which means "to bloom" or "to blossom." It is believed to have emerged around the 7th century AD, during the advent of Islam in the Arabian Peninsula.

Izhar holds significant religious and cultural significance in the Islamic faith. It is mentioned in the Quran, the holy book of Muslims, as one of the names of Allah (God). The name appears in verses that describe Allah as the one who brings forth vegetation and causes plants to bloom.

One of the earliest recorded instances of the name Izhar can be found in the works of renowned Islamic scholars and historians from the 8th and 9th centuries. Al-Tabari, a prominent Persian historian, and Ibn Ishaq, an early biographer of Prophet Muhammad, both mention individuals named Izhar in their writings.

Throughout history, several notable figures have borne the name Izhar. One such individual was Izhar ibn Shaddad (died 713 AD), a companion of Prophet Muhammad and a prominent military leader during the early Islamic conquests. Another historical figure was Izhar ibn Abd al-Aziz (died 792 AD), a renowned judge and scholar of Islamic jurisprudence during the Abbasid Caliphate.

In the 11th century, Izhar al-Haqq (1063-1131 AD), a famous Persian poet and mystic, gained recognition for his spiritual writings and contributions to Sufi literature. His works, such as "Kashf al-Mahjub" (The Revelation of the Veiled), have had a lasting impact on Islamic mysticism.

During the Ottoman Empire, Izhar Pasha (1570-1628 AD) was a prominent military commander and statesman who served as the Vizier of the Ottoman Empire under Sultan Murad IV. He is known for his successful military campaigns and his role in strengthening the empire's power and influence.

Another notable figure was Izhar Khan (1619-1674 AD), a Mughal nobleman and military commander who served under the emperors Shah Jahan and Aurangzeb. He played a crucial role in the Mughal-Maratha wars and was renowned for his military prowess and leadership skills.