In this study, the fibers produced from the banana plants provided from Antalya region were treated with a variety of mordants, and then the fibers were dyed with the natural dye extracted from turmeric plant (Curcuma longa) via ultrasonic and conventional method. Finally, the dye uptake and fastness properties of samples were investigated. The recent studies have demonstrated that the synthetic dyes can be non-biodegradable, allergenic, cytotoxic and partially carcinogenic. Recently demand for eco-friendly, non-carcinogenic and non-toxic products have been gradually increased. Compared to the synthetic dyes, the natural dyes are advantageous in the way of been biodegradable and non-toxic and not causing health problems, produced under temperate conditions. These properties of natural dyes lately result in increasing their usage. Today utilization of many plant extracts as natural dyes has been investigated such as turmeric plant.