Nocturia is a common bothersome condition. An ad hoc group of interested clinicians from a variety of backgrounds has developed draft guidelines for the assessment and management of this condition in primary care in New Zealand. The guidelines propose four steps in the assessment and management: clinical evaluation; simple investigations; assignment of a provisional diagnosis; and management based on the provisional diagnosis. For nocturnal polyuria-associated nocturia, the draft guidelines recommend that: lifestyle measures should be used as part of the management; if a patient complaining of nocturia has other features of overactive bladder, then bladder retraining and/or anticholinergics can be used; hypnosedatives should not be used to treat nocturia in older adults because of the increased risk of falls; loop diuretics given in the afternoon should be considered for the treatment; and desmopressin can be considered in the management of nocturnal polyuria associated nocturia but that it should be used cautiously in people aged over 65 because of the risk of hyponatraemia. A draft algorithm based on international guidelines is presented.