澳洲证券交易所（英语：Australian Securities Exchange，缩写为ASX），是由澳洲股票交易所（Australian Stock Exchange）和悉尼期货交易所（Sydney Futures Exchange）在2006年合并后所组成。总部设在澳洲悉尼。

澳洲证券交易所为世界十大证券交易所之一，2010年新加坡证券交易所曾提议与澳洲证券交易所合并，组成世界第五大的证券交易所，并取代香港交易所于亚洲第二名的位置。但该提案最终被澳洲参议院否决，未能成行。

Australian Securities Exchange Ltd, or ASX Limited (ASX), is an Australian public company (ASX: ASX) that operates Australia's primary securities exchange, the Australian Securities Exchange (sometimes referred to outside of Australia as the Sydney Stock Exchange). It was formed on 1 April 1987, through incorporation under legislation of the Australian Parliament as an amalgamation of the six state securities exchanges, and merged with the Sydney Futures Exchange in 2006.