Objectives To establish the prevalence of pain and functional disability in Irish adults with moderate and severe haemophilia, and to examine demographic and lifestyle influences. Methods Males ≥18 years with moderate or severe haemophilia participated. Pain and function were examined using the PROBE questionnaire. Results Of 49 participants median age 44 (IQR 32, 52) years, most had severe haemophilia (Factor VIII = 30; Factor IX = 13) and were on regular prophylaxis (88%). Those with moderate haemophilia (Factor VIII = 5; Factor IX = 1) treated on demand (12%). Acute (72%) and chronic pain (71%), functional difficulties (58%), and analgesic requirements (92%) were prevalent. Age was significantly associated with more advanced haemophilic arthropathy (p = .002), chronic pain (p = .029) and functional difficulties (p = .036). Adults who reported chronic pain commenced prophylaxis significantly later in life 32 (20, 51) vs. 8 (1, 23) years; p = .004. Physical activity was significantly lower in those with functional difficulties (p < .05). A disparity between self‐perceived ‘target joints’ and clinically defined target joints was also identified (76% vs. 23%). Conclusion Haemophilic arthropathy, pain and functional disability were prevalent amongst Irish adults with moderate and severe haemophilia. Age‐dependent lifestyle, analgesic and treatment influences on pain and function warrant further investigation.