Inflammatory myofibroblastic tumours (IMTs) are rare neoplasms of uncertain malignant potential that closely resemble other more aggressive spindle cell tumours. The distinction of IMT from the latter is of importance. We report a case of IMT in a 27-year-old man who presented with intermittent painless, macroscopic haematuria and was found to have a large bladder mass arising from the dome of the bladder. The tumour was resected transurethrally, and histology and immunohistochemistry were consistent with an IMT of the bladder. Our patient remained asymptomatic at follow-up 3 months later, when cystoscopy noted no regrowth of the residual tumour. Transurethral resection resection of bladder tumour, partial cystectomy and radical cystectomy form the mainstay of treatment of IMT. However, the optimal management of this condition remains uncertain due to the sparsity of reported cases.