I can start with team Finland. -Nen is irrelevant, means nothing.
G
Antero Niittymäki = Niitty is something like an unharvested field, Mäki is a hill
Fredrik Norrena = Swedish, I won't translate these.
Niklas Bäckstöm = swedish
D
Teppo Numminen = Nummi is a grassy area
Sami Salo = Salo is a city in western Finland
Kimmo Timonen = Timo is just a male name
Toni Lydman = Swedish
Aki Berg = you can guess
Petteri Nummelin = Swedish
Antti-Jussi Niemi = A cape, not the one you wear
Lasse Kukkonen (backup for Salo) = Kukko is a ****, the bird.
Jukka Hentunen = Probably some old word, I dont know
Olli & Jussi Jokinen = Joki means river
Niko Kapanen = Unknown to me
Mikko & Saku Koivu = Birch
Antti Laaksonen = Valley
Jere Lehtinen = Leaf
Ville Nieminen = see A-J Niemi
Ville Peltonen = Field
Jarkko Ruutu = Ruutu means literally square or diamond (in playing cards)
Teemu Selänne = I would translate Selänne as ridge.
Niklas Hagman = Swedish
G
Antero Niittymäki = Niitty is something like an unharvested field, Mäki is a hill
Fredrik Norrena = Swedish, I won't translate these.
Niklas Bäckstöm = swedish
D
Teppo Numminen = Nummi is a grassy area
Sami Salo = Salo is a city in western Finland
Kimmo Timonen = Timo is just a male name
Toni Lydman = Swedish
Aki Berg = you can guess
Petteri Nummelin = Swedish
Antti-Jussi Niemi = A cape, not the one you wear
Lasse Kukkonen (backup for Salo) = Kukko is a ****, the bird.
Jukka Hentunen = Probably some old word, I dont know
Olli & Jussi Jokinen = Joki means river
Niko Kapanen = Unknown to me
Mikko & Saku Koivu = Birch
Antti Laaksonen = Valley
Jere Lehtinen = Leaf
Ville Nieminen = see A-J Niemi
Ville Peltonen = Field
Jarkko Ruutu = Ruutu means literally square or diamond (in playing cards)
Teemu Selänne = I would translate Selänne as ridge.
Niklas Hagman = Swedish