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Mattias Adelstam (born 1982), Swedish footballer •
Mattias Ardin (born 1969), Swedish officer •
Mattias Asper (born 1974), Swedish goalkeeper •
Mattias Bäckman (born 1992), Swedish ice hockey defenceman •
Mattias Beck (born 1983), Swedish ice hockey player •
Mattias Bjärsmyr (born 1986), Swedish footballer •
Mattias Blomberg (born 1976), Swedish snowboarder •
Mattias Borg (born 1991), Swedish badminton player •
Mattias Carlsson (born 1980), Swedish ice hockey winger •
Mattias Claesson (born 1986), Swedish middle-distance runner •
Mattias Ekholm (born 1990), Swedish ice hockey defenceman •
Mattias Ekström (born 1978), Swedish racing driver •
Mattias Elfström (born 1997), Swedish ice hockey player •
Mattias Eliasson (born 1975), Swedish professional golfer •
Mattias Eriksson (born 1981), Swedish archer •
Mattias Falck (born 1991), Swedish table tennis player •
Mattias Gestranius (born 1978), Finnish football referee •
Mattias Granlund (born 1992), Swedish ice hockey player •
Mattias Gustafsson (born 1978), Swedish handball player •
Mattias Guter (born 1988), Swedish ice hockey player •
Mattias Håkansson (born 1993), Swedish footballer •
Mattias Thunman Hälldahl (born 1993), Swedish ice hockey defenceman •
Mattias Hargin (born 1985), Swedish alpine ski racer •
Mattias Hubrich (born 1966), New Zealand alpine skier •
Mattias Hugosson (born 1974), Swedish footballer •
Mattias Janmark-Nylén (born 1992), Swedish ice hockey center •
Mattias Johansson (born 1992), Swedish footballer •
Mattias Jons (born 1982), Swedish hammer thrower •
Mattias Jonson (born 1974), Swedish former football player •
Mattias Käit (born 1998), Estonian footballer •
Mattias Mete (born 1987), Swedish footballer •
Mattias Modig (born 1987), Swedish ice hockey goaltender •
Mattias Moström (born 1983), Swedish footballer •
Mattias Neuenschwander (born 1953), Swiss curler •
Mattias Nilsson (born 1982), Swedish biathlete •
Mattias Nilsson (ice hockey) (born 1994), Swedish ice hockey defenceman •
Mattias Nørstebø (born 1995), Norwegian ice hockey defenceman •
Mattias Norström (born 1972), Swedish ice hockey player •
Mattias Nylund (born 1980), Swedish soccer player •
Mattias Ohlin (born 1978), Swedish freestyle swimmer •
Mattias Öhlund (born 1976), Swedish ice hockey defenceman •
Mattias Oscarsson (born 1975), Swedish canoeist •
Mattias Östberg (born 1977), Swedish footballer •
Mattias Persson (born 1985), Swedish ice hockey player •
Mattias Rahm (born 1973), Swedish sailor •
Mattias Remstam (born 1975), Swedish ice hockey player •
Mattias Ritola (born 1987), Swedish ice hockey player •
Mattias Rydberg (born 1985), Swedish bandy player •
Mattias Saari (born 1994), Swedish ice hockey player •
Mattias Samuelsson (born 2000), American ice hockey defenseman •
Mattias Schnorf (born 1984), Swiss footballer •
Mattias Schoberg (born 1973), Swedish wrestler •
Mattias Sereinig (born 1984), Austrian midfielder •
Mattias Siimar (born 1998), Estonian tennis player •
Mattias Sjögren (born 1987), Swedish ice hockey centre •
Mattias Sunneborn (born 1970), Swedish Olympic athlete •
Mattias Svanberg (born 1999), Swedish footballer •
Mattias Tedenby (born 1990), Swedish ice hockey player •
Mattias Thylander (born 1974), Swedish former football player •
Mattias Tichy (born 1974), Swedish rower •
Mattias Timander (born 1974), Swedish ice hockey player •
Mattias Vegnaduzzo (born 1983), Argentine footballer •
Mattias Weinhandl (born 1980), Swedish ice hockey player •
Mattias Wennerberg (born 1981), Swedish ice hockey player •
Mattias Wigardt (born 1986), Swedish badminton player •
Mattias Wiklöf (born 1979), Swedish footballer •
Mattias Zachrisson (born 1990), Swedish handball player == Other fields ==