Abstract: Background and Objective: Dillenia suffruticosa (Griff.) Martelli is abundantly thriving in various forest types in Brunei Darussalam, including the tropical Bornean heath forests. This study aimed to investigate the plant hormones that can be used to propagate stem cuttings of D. suffruticosa, which is a promising approach to supply plantlets to revegetate degraded tropical heath forests. Methodology: Stem cuttings of D. suffruticosa were treated using three single auxin hormone: 0.1% Indole Acetic Acid (IAA), 0.1% Indole Butyric Acid (IBA) and 0.2% Naphthalene Acetic Acid (NAA) and 5 commercially available rooting hormones: Yates, Clonex and Seradix 1, 2 and 3 and planted in a medium containing a mixture of equal parts black soil and perlite. The survival and rooting percentages, number and lengths of roots produced and number and surface areas of new leaves were assessed at 4-weekly intervals until week 16. Results: Results indicated that the cuttings treated with single auxin treatments (mainly 0.2% NAA and 0.1% IAA) had higher survival and rooting percentages, longer roots, larger leaf surface areas and produced more leaves than those cuttings treated with commercial rooting hormones. Conclusion: It is concluded that compared to commercial rooting hormones, 0.2% NAA and 0.1% IAA were the most effective auxin hormones in promoting survival and growth of Dillenia suffruticosa cuttings.