A portable trumpet stand has an instrument bracket, multiple legs and a central post. The instrument bracket has a central hole, a top and a bottom. The legs are mounted pivotally around and protrude out radially from the instrument bracket, and each leg has a proximal end pivotally mounted in the instrument bracket. The central post is mounted slidably in the central hole of the instrument bracket, has a top end, a bottom end and a spherical cushion. The bottom end can be secured in the central hole so the central post protrudes perpendicularly up to be mounted in a cylindrical metal tube of a trumpet to hold the trumpet in position. The portable trumpet stand can be collapsed and stored in the cylindrical metal tube of a trumpet so the portable trumpet stand and the trumpet can be stored in a case altogether.