Dan Christian has signed a deal to play T20 cricket for Middlesex this summer.
The Australia all-rounder will arrive on May 12 and remain at Lord's for the entire group stage of the T20 Blast tournament.
Christian was part of the Australia squad at the recent World Twenty20 tournament and has played 125 matches in the sport's shortest format.
He said: "The opportunity to play at the Home of Cricket is a dream come true and I can't wait to pull on a Middlesex shirt for the first time.
"Kicking off the tournament with a double header at Lords against Sussex and Essex in front of what I am sure will be a full house promises to be one of the highlights of my career.
"I look forward to helping Eoin Morgan and the boys challenge for silverware this year!"
Middlesex director of cricket Angus Fraser said: "When we sat down to identify the type of cricketer required for this summer's T20 Blast a seam bowling all-rounder was top of our list.
"We are therefore delighted to have attained the services of such an experienced, talented and dangerous cricketer.
"Unlike many of this summer's T20 signings Dan is available for selection for all of our group matches, which was important to us."