Haemophilia caregivers face limitations in their life leading to perceived burden. This single-centre study investigates the impact of burden on caregivers’ health-related quality of life (HRQoL). Methods: Questionnaires for caregivers comprised demographic data, HRQoL (EQ-5D, SF-36) and caregiver burden (IOF: Impact on Family Scale). Children were also asked about their HRQoL (EQ-5D, Haemo-QoL Short Form). Results: 20 consecutive parent/child dyads participated. 80% were mothers (mean age of 39.80±6.2 years) with 1-3 haemophilic children aged 8-17 years and 2.5±1.2 children <18 years living in the household. Mothers did most childcare (80%), 50% worked part-time, and 55% reported that haemophilia had an economic impact on their family. 80% of boys had haemophilia A; 60% were severely affected. Most received home treatment (85%) and prophylaxis (80%). Caregivers’ and boys’ HRQoL was similarly good (EQ-5Dparents M=0.90±0.1 vs. EQ-5Dchild M=0.81±0.3); by contrast, boys reported better values in the EQ-VAS (Mchild=90.25±10.0 vs. Mparents=82.16±14.8). Caregivers reported highest impairments in the dimensions ‘vitality’ (M=60.00±20.5) and ‘emotional role’ (M=70.37±42.6) of the SF-36. In the IOF, caregivers reported highest impairments in the dimension ‘negative impact’ (M=60.08±20.7). Caregivers reporting high burden had significantly worse HRQoL in the domains ‘bodily pain’ (p<.028) and ‘social functioning’ (p<0.024) of the SF-36. Caregivers who reported that haemophilia had an economic impact on their family and those with a chronic disease showed significant higher impairments in caregiver burden and their HRQoL. Conclusions: The perceived burden of haemophilia has a direct impact on caregivers’ HRQoL. Further studies with haemophilia-specific instruments are needed to verify these findings.