Hordan has made the move from Preston North End to Hibernian for an undisclosed fee.
Hibernian manager Neil Lennon has said "He's one we've been keen on for a long time and it's a real coup to get him over the line, Daryl Hordan will give us a real threat going forward and some strength out wide. We had been looking to add in that area and I'm delighted with the options we now have.
"He has power and pace and will hopefully give us another dimension to our play in the final third."
Daryl Hordan Irish international has signed a three year deal with the club, hoping to make his first appearance on Sunday against St Johnstone.
Hordan said "I am delighted to have made the move to Hibs, I've spoken to the manager and am excited for his plans for the season ahead."
"Obviously the boys have started well in Europe and the league, they had a good season last year and the ambition is there to follow that up with another successful year. I'm ready to play and looking forward to trying to break into the team."
The 26 year old has had four caps for his international side Ireland and since joining Preston North End in January 2017 he made 44 appearances, scoring four goals.
Hordan helped his previous club Dundalk qualify for the Europa League group stages and win three league titles in a row.