Banjo D chord (Open D)D major on the 5-string banjo: 0 0 0 0, and 6 more shapes

Frets, string 4 to string 1: 0 0 0 0 (open position)

1. String 4 (D): open, D
2. String 3 (F♯): open, F♯
3. String 2 (A): open, A
4. String 1 (D): open, D
5. String 5, the short f♯: open, F♯, in the chord

Sounds: D F♯ A D  ·  D is D, F♯, A (1 · 3 · 5)

Found in: G major (V), A major (IV), D major (I), A mixolydian (IV), D mixolydian (I), A dorian (IV)

The 5th string: the short f♯ is the 3rd of D, so let it ring.

Open D tuning: f♯DF♯AD, the short 5th string first, then strings 4 to 1.