The Equestrian Individual Championship Test Grade IV event at the 2008 Summer Paralympics was held in the Hong Kong Olympic Equestrian Centre on 8 September at 19:15.

The competition was assessed by a ground jury composed of five judges placed at locations designated E, H, C, M, and B.

Each judge rated the competitors' performances with a percentage score.

The five scores from the jury were then averaged to determine a rider's total percentage score.

The event was won by Philippa Johnson, representing  South Africa.