Disclosed are an ultrasound image providing apparatus and method. The ultrasound image providing apparatus includes an interface that displays a screen including a gain setting window which includes a plurality of slide bars for setting a plurality of time gain compensation (TGC) values of ultrasound image data, and receives, through the gain setting window, a user input for adjusting at least one selected from the sizes and number of slide bars, and a controller that performs control to update and display the gain setting window, based on the user input.