Family name Kosuda (Kosuda 
) , worldwide, is a common cognomen. The family name Kosuda is habitual in Japan, where it is quite a common surname, Poland, where it is a rare surname, and the United States, where it is a very rare surname. Very seldom, Kosuda is the forename as well as the last name.
Ko, Gary, Lori, Lynn, Jane, John, Jeff, Judy, Eiji, Eiyu, Vera, Yuka, Yuji, Maria, Marek, Masao, Mikio, Santa, Sadao, Shoji, Susan, Steve, Dina, Dave, Koji, Cory, To, Ei, Ho, Yo, Sho, Chi, Kay, Kyu, Kyo, Ryo, Andre, Dan, Jan, Joe, Jim, Ewa, Marc, Mike, Shin, Anne, Adam, Akio, Don, and Angel