A display device includes a display panel including a display area and a peripheral area, a plurality of data lines and a plurality of driving voltage lines provided in the display area, a plurality of data connection lines provided in the peripheral area and connected to the plurality of data lines, a first driving voltage transmission line provided in the peripheral area and overlapping the plurality of data connection lines, a second driving voltage transmission line provided in the peripheral area and disposed between the first driving voltage transmission line and the display area, and a plurality of driving voltage connection lines. The plurality of driving voltage connection lines are connected to the first driving voltage transmission line and the second driving voltage transmission line, and provided between the first driving voltage transmission line and the second driving voltage transmission line.