Objective measurement should be incorporated into all areas of physiotherapy including within 9 the assessment and treatment of horses, as there is a need to evaluate the effectiveness of 10 treatment intervention objectively. Whilst objective measures are available in a research 11 laboratory setting it appears that in clinical practice mostly subjective methods of recording 12 assessment and reassessment data are used. This article reviews the objective measures 13 currently available to equine physiotherapists for use in clinical practice, beyond those 14 available in a research laboratory setting. Within the literature there are studies reporting the 15 reliability and validity of objective measures for the assessment of pain, gait, posture, range of 16 motion, palpation and muscle size in horses. Whilst these validated objective measurement 17 tools are available, they are not presently used consistently in clinical practice. In addition, the 18 non-verbal nature of the equine patients precludes the use of self-reporting, meaning that there 19 are no reported functional outcome scores possible similar to use with human patients. 20 However the combined use of pain responses, behavioural changes and objective measures 21 collected during clinical assessment, both pre and post treatment, could be useful in practice. 22 Equine physiotherapists should integrate more objective methods of recording data from 23 assessments of horses.