Esaias is a unique and distinctive given name of Hebrew origin, meaning "God is salvation." It is derived from the Hebrew name Yeshua, which is also the source of the more familiar names Joshua and Jesus. In the Old Testament of the Bible, Esaias is the Hebrew form of the prophet known in English as Isaiah. The name gained popularity during the Protestant Reformation due to its biblical associations. It has been used by notable individuals throughout history, including the Dutch Golden Age painter Esaias van de Velde and the Swedish theologian Esaias Tegnér.
The name Esaias experienced a significant increase in popularity over time, with a total of 734 births recorded between 1991 and 2023. Initially, the name had fewer than ten births per year until 1998, after which it began to gain traction, reaching double digits annually. The highest peak occurred recently, in 2023, with 66 births.