The 20-year-old will look to build on a successful U-21 championship on a stint with the Terriers in the Championship
The 20-year-old has penned a new long-term contract at Anfield, but will spend the campaign at John Smith's Stadium with Jan Siewert's newly-relegated side.
Grabara spent the second half of last season at Danish outfit Aarhus, and impressed for Poland at the European Under-21 Championships in Italy this summer.
Liverpool hope the highly-rated youngster will gain valuable first-team experience in the Championship.
Huddersfield, meanwhile, saw last season's first choice 'keeper, Jonas Lossl, join Everton on a free transfer last month.
Grabara will be hoping for a spell as productive as the last time the Reds loaned a goalkeeper to Huddersfield – when former Liverpool youngster Danny Ward joined the Terriers during the 2016-17 season and helped the club earn promotion to the Premier League.
Ward has since moved on to Leicester, joining them on a £13 million ($17m) deal last summer.
Grabara will not be the last player to leave Liverpool on loan this month, with midfielder Herbie Kane expected to complete a move to the Championship, with Brentford, Charlton and Hull among those keen.