There is sparse information on patterns of opioid use among opioid‐naïve surgical patients. This prospective observational study investigated patterns of opioid prescribing after hospital discharge, opioid use at 1 week and 1, 3 and 6 months after discharge, and associations between opioid use, pain control and opioid‐related difficulties in opioid‐naïve surgical patients (age ≥18 years, not prescribed opioids in the previous 12 months, expected hospital length of stay >24 h after surgery). Of 128 participants recruited, 56.3% (n = 72) were male with a median (interquartile range) age of 66 (50.7–73.0) years; 38.3% (n = 49) were discharged with an opioid prescription postoperatively. After discharge, 37.3% (n = 25/67), 12.3% (n = 8/65), 12.5% (n = 6/48) and 2.4% (n = 1/42) of participants had used an opioid within 1 week and 1, 3 and 6 months, respectively. Low levels of pain were experienced overall postoperatively. There was considerable variation in opioid‐related problems and concerns over time, with the most common being the desire to cease the opioid. Follow‐up response rates were low, which limits the conclusions that can be drawn from the data. However, the findings indicate that opioids are commonly prescribed at discharge to opioid‐naïve surgical patients, with significant decline in use over time.