Background and aims: Recovery is a challenge for individuals coping with a gambling disorder (GD). Recovery capital (RC) is a conceptual framework describing positive external and internal (e.g., human, social, community and financial) resources that promote recovery. Negative RC relates to external and internal obstacles to recovery. To date, no scale has captured both positive and negative RC items in the gambling field. Based on the RC framework, this pilot study aimed to develop The Holistic Recovery Capital in Gambling Disorder (HRC-GD) instrument, and to explore its associations with recovery status, measures of psychopathology and happiness. We hypothesized that higher HRC-GD scores will be positively related to recovery and subjective happiness, but negatively linked to depression, anxiety, and gambling severity. Method: Recovered and non-recovered individuals with a lifetime DSM-5 GD (n 5 164) completed the HRC-GD instrument, the DSM-5 GD diagnostic criteria, and measures of depression, anxiety, and subjective happiness. Results: Through a process of item reduction, which included a principal components analysis, 19 items were retained. Since exploratory factor analysis (EFA) yielded uninterpretable findings, an index score reflecting human, financial, community, and social resources and obstacles was calculated. HRC-GD index scores were negatively correlated with anxiety, depression, and GD symptom severity, but positively related with subjective happiness. Index scores were significantly associated with recovery status. Conclusions: The HRC-GD index holds promise as a new tool for measuring RC in GD. Additional research is needed to validate this index using larger and more ethnically and gender diverse clinical and community samples of individuals with GD.  Kulcsszavak: positive recovery capital, negative recovery capital, recovery, gambling disorder, index development