The goalkeeper, a Welsh international, was a free agent after leaving Leicester City at the end of last season following the Foxes relegation from the Premiership to the Championship where they will come up against Phil Parkinson's Reds next season.
The 32-year-old was a product of the Wrexham academy and after playing one first-team game in the Welsh Cup against Airbus, he made the switch to Liverpool in January 2012 for a fee of around £100,000.
While at Anfield, Ward had a loan spell with Morecambe and then had an even more successful temporary stint at Aberdeen who he joined ahead of the 2015-16 season.
Liverpool cut short Ward's loan at Aberdeen and he returned after impressing with 13 clean sheets in all competitions for the Dons and in April 2016, the stopper made his debut for the Premier League side in a 2-1 win against Bournemouth in place of Simon Mignolet.
In July 2016, Ward signed a season-long loan with Championship side Huddersfield Town and he played in the play-off final, saving a total of three penalties against Reading including the crucial fifth spot-kick, to help seal promotion to the top-flight.
After slipping down the pecking order at Liverpool, where he made three appearances, Ward completed a move to fellow Premier League side Leicester City for around £12.5 million in July 2018.
During his seven seasons with Leicester, Ward made 29 league appearances and having made his Wales debut in 2016, he was part of their squad that reached the semi-finals of Euro 2016, and the last 16 of Euro 2020.
He has been capped 44 times by his country and becomes Wrexham's second new signing of the summer transfer window after striker Ryan Hardie joined from Plymouth Argyle.