Īśvara means lord or master. In Vedānta it names Brahman as the personal God who creates and governs the world and grants grace. In classical Yoga it names a special self, untouched by affliction and karma, on whom the yogin may meditate. Devotional traditions identify Īśvara with Viṣṇu, Śiva or the Goddess.
Īśvara
The Lord: in Hindu thought, God as the personal ruler of the universe and the object of devotion.
Also: Ishvara, Isvara