The Bluebirds will face
Forest Green Rovers (A) - Wednesday, 24th July (7.45pm) Cheltenham Town (A) - Saturday, 27th July (3.00pm) Brentford (A) - Tuesday, 30th July (7.45pm)
City went to Forest Green and Cheltenham last summer as well. The visit to Brentford could be against a club preparing for Championship football but only if Brentford beat Yeovil at Wembley in the League 1 play off final.
Ticket info will follow in due course.
Source: Cardiff City Online