The 31-year-old has signed a three-year deal at the KC Stadium as the Tigers continue to prepare for their return to the Barclays Premier League.
McGregor told hullcityafc.net: "I'm really excited to be here and I'm happy that everything is done now. I can't wait to get started here. This is a great chance for me to play in the Premier League and I'm looking forward to the season ahead."
Source: PA
Source: PA