Chris Lowe is preparing to sign a three-year contract on July 1 after joining a free transfer from Kaiserslautern.
Huddersfield town manager David Wagner has previously managed Lowe at Borussia Dortmund.
Wager made a statement on the club's website that read, "I know Chris from our time together at Dortmund. He is a player I like a lot.
"Everyone knows him as a player in Germany, as he is often voted as the best left-back in the 2 Bundesliga.
"Everyone also knows he is out of contract in the summer and a lot of heavyweight clubs in Germany, England and elsewhere were interested in such a quality player who is on the market.
"Given this was the case, the fact we have been able to bring a player of Chris' quality to Huddersfield shows we are going in the right direction."