Sausage sizzle is a popular Australian and New Zealander event in which sausages are grilled or barbecued. The event mostly occurs in large public spaces. Sausage sizzles can be a free event or a fundraiser event for a local community organization such as bush fire brigades or public schools.

The term sausage sizzle denotes both the event and the barbecuing technique. Cheaper sausages (a.k.a. snags) are grilled or barbecued, then served on a slice of bread. Ketchup, barbecue sauce, and mustard are the typical condiments, while fried onions are usually placed on top of the sausage sandwich.

The onions have recently caused a big debate because Bunnings, the Aussie home improvement store which offers barbecue facilities for hire, has decided to alter the sausage sandwiches and place onions on the bottom for ''safety reasons'', causing a massive outrage in the country.