NEW YORK, Nov 10 (Reuters) - The Province of Ontario on Tuesday launched a $4 billion two-part global note sale, with pricing expected later on Tuesday, said a market source familiar with the sale.

The offering includes $3 billion in three-year notes expected to yield 15 basis points over midswaps and $1 billion in three-year floating-rate notes expected to have a coupon rate of 15 basis points over the three-month London interbank offered rate.

The joint lead managers on the sale are Barclays, Credit Suisse, JP Morgan and Toronto Dominion. (Reporting by Caryn Trokie, Editing by Chizu Nomiyama)