The name Mirtha is best understood as a variant, modern spelling, compound, or stylistic form connected to Mira. The root name Mira has origins in Latin, Slavic, Sanskrit, and Arabic usage and is generally associated with the meaning wonderful, peace, ocean, or princess depending on origin. This gives Mirtha a connection to the sound and symbolism of Mira, while allowing for a more distinctive or contemporary spelling. Because Mirtha itself may not have a separate ancient etymology, its meaning is most safely traced through the better-documented root name Mira.

The root form of Mirtha is Mirtha — meaning Myrtle.

Mirtha remains a beloved choice. Timeless appeal across cultures and generations.