Arkadiusz is a masculine Polish given name. Notable people with the name include:
- Arkadiusz Aleksander (born 1980), Polish football player
- Arkadiusz Bąk (born 1974), Polish footballer
- Arkadiusz Baran (born 1979), Polish football player
- Arkadiusz Bazak (born 1939), Polish actor
- Arkadiusz Bilski (born 1973), Polish football player
- Arkadiusz Czarnecki (born 1987), Polish footballer
- Arkadiusz Czartoryski (born 1966), Polish politician
- Arkadiusz Głowacki (born 1979), Polish footballer
- Arkadiusz Godel (born 1952), Polish fencer
- Arkadiusz Gołaś (1981–2005), Polish volleyball player
- Arkadiusz Jakubik (born 1969), Polish actor
- Arkadiusz Kaliszan (born 1972), retired Polish professional footballer
- Arkadiusz Klimek (born 1975), Polish professional footballer
- Arkadiusz Korobczynski, Polish Cold War pilot, defector to Sweden in 1949
- Arkadiusz Kubik (born 1972), Polish footballer
- Arkadiusz Litwiński (born 1970), Polish politician
- Arkadiusz Malarz (born 1980), Polish goalkeeper
- Arkadiusz Miklosik (born 1975), retired Polish footballer
- Arkadiusz Milik (born 1994), Polish footballer
- Arkadiusz Miłoszewski (born 1973), Polish basketball coach and former player
- Arkadiusz Moryto (born 1997), Polish handball player
- Arkadiusz Mularczyk (born 1971), Polish politician
- Arkadiusz Mysona (born 1981), Polish football player
- Arkadiusz Onyszko (born 1974), Polish goalkeeper
- Arkadiusz Piech (born 1985), Polish footballer
- Arkadiusz Radomski (born 1977), Polish footballer
- Arkadiusz Rybicki (1953–2010), Polish politician
- Arkadiusz Ryś (born 1988), Polish footballer
- Arkadiusz Skrzypaszek (born 1968), Polish modern pentathlete
- Arkadiusz Sojka (born 1980), former Polish footballer
- Arkadiusz Woźniak (born 1990), Polish footballer