The aim of this study was to investigate the intra- and inter-rater reliability of a method aimed to measure the head position relative to shoulders with a universal goniometer. The subjects included 31 healthy individuals with mean age 31.5 years. To examine intra-rater reliability, two assistants carried out the measurements on two occasions with an interval of eight days. To examine inter-rater reliability, four assistants carried out the measurements. The intraclass correlation coefficient (ICC based on one factor repeated measures ANOVA) was 0.91 for the first assistantand 0.94 for the second. No significant difference was evident between the two assessment occasions for the two assistants. ICC was also used to estimate the inter-rater reliability of the four assistants' measurements and was 0.95. The mean difference between the four assistants' reading varied from 0.1 to 1.6 degrees. It was concluded that the measurement of head position relative to shoulders with a goniometer is a reliable method. However, standardisation of method is important to get reliable measurement results in this method, as it is in any measurement method.