The word David, in its Arabic form, has been repeated 16 times in Quran in the following verses:
Chapter 2, Verse 251
Chapter 4, Verse 163
Chapter 5, Verse 78
Chapter 6, Verse 84
Chapter 17, Verse 55
Chapter 21, Verse 78
Chapter 21, Verse 79
Chapter 27, Verse 15
Chapter 27, Verse 16
Chapter 34, Verse 10
Chapter 34, Verse 13
Chapter 38, Verse 17
Chapter 38, Verse 22
Chapter 38, Verse 24
Chapter 38, Verse 26
Chapter 38, Verse 30
ParsQuran.com