An organic light emitting diode display includes pixel groups disposed in parallel in a first direction and each including n1 pixel regions; driving voltage lines disposed between two adjacent pixel regions of the n1 pixel regions and extending in a second direction intersecting the first direction to apply a driving voltage to the two adjacent pixel regions; initializing voltage lines extending in the second direction to apply an initializing voltage to the pixel groups; data lines extending in the second direction to apply a data voltage to the pixel groups; first driving low-voltage lines extending in the second direction to apply a driving low voltage to the pixel groups; and a scan line extending in the first direction and intersecting the driving voltage lines, the initializing voltage lines, the data lines and the first driving low-voltage lines, where 3×n2 pixel groups are disposed between two adjacent first driving low-voltage lines.