"He has a great level of experience internationally, and in the top divisions in both his native Austria and Germany... and that experience will serve us well," Brighton manager Chris Hughton told the club's website.
"He will add competition at the back on the left side of defence, and I'm now looking forward to working with him."
Suttner is Brighton's third signing since gaining promotion as they prepare for their first top flight season after a 34-year absence.
(Reporting by Aditi Prakash in Bengaluru)
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