<p>Providencia (P.) rettgeri is a rare facultative anaerobic Gram-negative organism most often isolated from genitourinary and gastrointestinal sources, causing diarrhoea and urogenital symptoms. The authors present a case of P. rettgeri causing cellulitis in a patient lacking the typical risk factors normally associated with the bacterium. There was limited clinical improvement with empirical antimicrobial therapy. Blood cultures identified P. rettgeri responsive to adjusted Gram-negative therapy. Poor personal hygiene and living in a retirement home may have been potential risk factors for the infection</p>