TORONTO, ONTARIO--(Marketwire - April 11, 2012) -

All amounts in U.S. dollars unless otherwise stated.

Onex Corporation (TSX:OCX) announced that it will release its results for the three months ended March 31, 2012 on May 9, 2012. A live broadcast of Onex' conference call to discuss the results will begin at 4:30 p.m. ET on May 9, 2012.

Onex' Annual General Meeting of shareholders will be held on Thursday, May 10, 2012 at 10:00 a.m. ET at The Hazelton Hotel, Yorkville Room, 118 Yorkville Avenue, Toronto, Ontario.

A link to these events and their 90-day on-line replays will be available under the Investor Information section of Onex' website at [ www.onex.com ].

About Onex

Onex is one of North America's oldest and most successful investment firms committed to acquiring and building high-quality businesses in partnership with talented management teams. Onex manages investment platforms focused on private equity, real estate and credit securities. In total, the Company manages approximately $14 billion, of which $9 billion is third-party capital. As well, Onex invests its own capital directly and as a substantial limited partner in its Funds.

Onex' businesses have assets of $41 billion, generate annual revenues of $37 billion and employ approximately 246,000 people worldwide. Onex shares trade on the Toronto Stock Exchange under the stock symbol OCX. For more information on Onex, visit its website at [ www.onex.com ]. The Company's security filings can also be accessed at [ www.sedar.com ].

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