Main Dominant 7 chord shapes

C Dominant 7 guitar chords

Scale intervals: 1 – 3 – 5 – 7b

• Notes in the chord: C – E – G – Bb
• Various names: C7 – Cdom7 – C Dominant Seventh

In the case where the third note is a minor third above the root, it is instead called a minor seventh chord.
In the case where the seven note is a major seven above the root, it is instead called a major seventh chord.