The Equestrian Individual Championship Test Grade Ib event at the 2008 Summer Paralympics was held in the Hong Kong Olympic Equestrian Centre on 9 September at 20:50.

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 Lee Pearson, representing  Great Britain.