• Afrikaans (Africa) - Dankie
• Albanian - Faleminderit
• Arabic - Sukran
• Arabic - Shukran Gazillan (Thank you very much)
• Armenian - shur-nur-ah-gah-lem
• Australian - Thoinks, Moite!
• Basque Country (between France and Spain) - Eskerrik asko (Thank you very much)
• Bengali - Dhannyabad
• Bulgarian - Blagodaria
• Bosnia - Hvala
• Burma(Myanmar)  - Jae Zu Din Pa De (Thank you)
• Cameroon (Duala) - Na som (thanks)
• Cameroon (Duala) - Na som djita (Thank you very much)
• Cantonese - M'goy (sp? -- thank you for the service)
• Cantonese - Do jey (sp? -- thank you for the gift)
• Catalonia (catalan) - gràcies [grah'-si-es] estandard
• Catalonia (catalan) - moltes gràcies [many thanks]
• Catalonia (catalan) - merci [mer'-si] very colloquial
• Cherokee Nation - Wado (Thank you)
• Cherokee (Eastern) - Skee (Thank you)
• Chinese (Mandarin) - Xie_Xie (shieh shieh)
• Chinese (Cantonese) Mh goi (m-ghoh-ee) (informal: thanks)
• Chinese (Cantonese) Do jeh (tou yeh) (formal: thanks)
• Cook Islander - Kia Manuia
• Croatia - Hvala
• Czech – Dekuji (deh'-ku-yih)
• Danish - tak (tahg)
• Dutch - dank U wel (dahnk you well) (formal: thank you very much)
• Dutch - bedankt / dank je wel (dahnk ye well) (informal: thanks) - WEL is 'good', like "I wish you well"
• Dutch - Dank U zeer / duizend maal dank (thank you VERY much) - a superlative and used when you get stuck in a thunderstorm, then lost, mugged, robbed, etc. And someone helps you. Only then. ZEER is 'very'. JE and U are 'you', but informal and formal. (still alive in old english like in 'ye olde'). "Duizend maal" means a 'thousand times'.
• Dutch - hartelijk dank (thanks from the heart) Another formal form used in contexts like: "thanks for coming/inviting" (to a wedding, birthday party) or when receiving a formal present.
• English - Thanks awfully, old boy
• Esperanto - Dankon (thank you)
• Esperanto - Dankegon (thank you very much)
  Estonia - Aitäh
• Ewe Togo (Africa) - Akpé (Appé)
• Ewe Togo (Africa) - Apké na wo (Thanks to you)
• Fijian - Vinaka
• Fijiab - Vinaka vaka levu (Thank you very much)
• Finnish - kiitos (kee'-toas)
• Fon Benin (Africa) -  Kpè nu wé
• French - merci (mehr-see')
• French - Merci Madame - Thanks (to a woman)
• French - Merci Mademoiselle - Thanks (to a young girl)
• French - Merci Monsieur - Thanks (to a man)
• F.Y.R.O.M. (Macedonia) - Hvala
• Gambia (Mandinka) - Abarka
• Georgia(Sakartvelo) - madlobt (thank you)
• Georgia(Sakartvelo) - didi madloba (thank you very much)
• German - Danke (dahn'-kuh)
• German - Danke schoen (literally: nicely thank you, outdated)
• German - Danke sehr (Thank you very much)
• German -Vielen Dank (Many Thanks)
• Greek - Efharisto (ef-har-ris-tou')
• Greek - Efkaristo poly
• Guarani - Aguije (ah-we-JAY) native indian language of Paraguay and Western Brazil
• Guinea (Mandinka) - Abarka
• Gujarathi (India) - Aabar
• Hawaiian - Mahalo
• Hebrew - Toda (toh-dah')
• Hebrew - Toda raba (thank you very much)
• Hindi (India National Language) - Dhanyavaad
• Hindi - Shukriyaa
• Hungarian - Köszönöm (kuh'-suh-nuhm)
• Icelandic - Þakka þér fyrir
• Icelandic - Takk (informal)
• Indonesian - Terima kasih (teh-ri-mah kah-sih)
• Indonesian  - Terima Kasih Banjak/Banyak (Both pronounced bunyuk - Thank you very much)
• Iran (Persia) - Moteshakeram (formal)
• Iran (Persia) - Merci (informal - just like french but r in this word is pronounced as /r/ )
• Irish - Go raibh maith agat ( Thank you  "Go - Rev - Mah - Agut") (literally, may you have good things)
• Irish - Go raibh mile maith agat ( Thank you very much "Go - Rev - Meela - Mah - Agut") (literally, may you have a thousand good things)
• Irish (Northern) - Nice one bro'r, or Cheers mucker!
• Italian - Grazie (grahts'-yeh)
• Italian - Grazie tanto (many thanks - cordial version)
• Italian - Mille Grazie (a thousand thanks)
• Japanese - Arigato (ah-ree-gah'-toh) or A_Ree_Ga_Tou_Go_Zai_Ma_Su
• Japanese - Domo arrigato
• Javanese - Matur nuwun
• Jive - Thanks mon - Appropriate only if directed to a male
• Kannada (India) - Dhan-ya-vaadaa (spoken in S India, in Bangalore, the Silicon Valley of India.)
• Konkani (West coast - Konkan coast of India - It also is the state official language of Goa) - Dev boren koru (thank you - literally means " May God do good to you" as that is the way we thank people. )
• Korean - Kamsa hamaida (kam'-sah hum-nee-dah' )
• Latvian - Paldies
• Lithuanian - Achu
• Luganda (Uganda) - Waybale (Thank you)
• Luganda (Uganda) - Waybale Nyo (Thank you very much)
• Malayalam (South Indian Language) - Nandi
• Malayalam (India) - Nani
• Malaysian - Terima Kasih ("Tay ree ma Kaa seh")
• Mali (Mandinka) - Abarka
• Mandinka - Abarka (language of West Africa; The Gambia, Senegal, Guinea and Mali)
• Maori - Kia Manuia
• Nepali -- (Nepal National Language) - Dhan-ya-vaad
• New Zealand - Cheers - LOL
• New Zealand - Kiaora Koe (NZ Maori)
• New Zealand - Kiaora Korua (NZ Maori)
• New Zealand - Kiaora Koto (NZ Maori)
• New Zealand - Kiaora Tatou (NZ Maori)

• Nigeria (Hausa) -  Na gode

• Norwegian - Takk (tahkk)
• Oman - Shakkran
• Palauan - soolong (Republic of Palau)
• Paraguay (Guarani) - Aguije (ah-we-JAY)
• Persian/Farsi - Mam'noon or Mo'teshake'ram (Spoken in Iran, Afghanistan and other Central Asian countries)
• Philippines Tagalog - Salamat
• Philippines - Maraming Salamat (thank you very much)
• Polish - Dziekuje (dsyehn-koo-yeh)
• Portuguese - Obrigada (Female)
• Portuguese - Obrigado (Male) (oh-bree-gah'-doh)
• Portuguese - Muito Obrigado (Thank you very much)
• Portuguese - Muito Obrigado com Voce (have my personal thanks)
• Punjabi [ Pakistan and India] - Bhala Hove
• Qatar - Shakkran
• Romanian - Multumesc (phonetic: mooltzoomeask)
• Romanian - Va multumim frumos (great thanks)
• Russian - Spasiba (spah-see'-boh)
• Russian - Blagodaryu (a little official)
• Russian - Premnogo blagodaren (my greater thanks - words said to bosses by workers)
• Russian - Spasibo balshoye (big thanks)
• Samoan - Fa'afetai (fah-ah-feh-ta-e - thank you)
• Samoan - Fa'afetai tele lava (Thank you very much)
• Samoan - Talofa
• Saulteaux Indians (Manitoba, Canada) - Miigwech (meegweech) -- there are similar spellings in other native languages such as Cree, etc.
• Scottish - Cheers
• Scot's Gaelic (Informal) - Tapadh Leat (tah-puh let)
• Scot's Gaelic (Formal) -   Tapadh Leibh  (tah-puh lave)
• Scot's Gaelic (Many Thanks) - Moran Taing
• Senegal (Mandinka) - Abarka
• Serbo - Croat -Hvala
• Slovakia – Dakujem (deh'-ku-yem)
• South Africa - Dankie ("Dung-Key")
• South Africa - Baie Dankie (thanks very much - "Buyer Dung-Key")
• Spanish - Gracias (grah'-syas)
• Spanish - Gracias a todos (Thank you all)
• Spanish - Muchas gracias (thank you very much, literally: many thanks) While Dutch people scarcely use the superlative forms, the Spanish don't use the minimalistic forms much (mostly in informal context). In Spanish, when a flyer is shoved into your hands, its worth a 'gracias', you normally use 'muchas gracias'.
• Spanish - Muchisimas gracias (thank you VERY much) - to someone who was useful to you.
• Spanish - un millón de gracias (a million thanks) - for when someone saves your life.
• Spanish (Latin America, informal) - Te pasastes. (informal)
• Spanish (Latin America, informal) - Se pasó. (formal) Which means "You went over the line", or "thanks for going out of your way to help me". When used, it will get you a smile, guaranteed.
• Sundanese - Nuhun
• Sunda - Hatur Nuhun
• Swahili - Ahsante (ah-sahn'-teh)
• Swahili - Ahsante Sana (Thank you very much)
• Swedish - Tack (tahkk)
• Swedish - Tack så mycket
• Tahitian - Maururu
• Tamil (India) - Nandri ("Nun-dry" spoken in South India, Singapore, Malaysia)
• Teenager -
• Telungu (South Indian Language)- Manjuthe
• Thai - Khob Khun Kha (Feminine)
• Thai - Khob Khun Krab (Masculine)
• Thai - Khop Khun Mak (Thank you very much)
• Thai - Khop Khun Mak Kha (Feminine)
• Thai - Khob Khun Mak Krab (Masculine)
• Thai - Khob Pra Khun Kha (Formal feminine)
• Thai - Khob Pra Khun Krab (Formal masculine)
• Tibetan - Thuk Ji Chhe
• Turkish - Tesekkurler ( teh-sheh-keur eh-deh-rim)
• Turkish - Çok tesekkur ederim (big thanks)
• Turkish - Saðol (thank you)
• Turkish - Saðolun (thank you - "saol")
• Turkish - Tesekkurler (thanks - "teshekkyurler")
• U.S. & Canada - Thank You
• United States (South) - Thanks y'all
• Ukranian - Dyakuyu
• Urudu (India) - Shukria
• Urudu (India) - Bahut Bahut Shukriyaa
• Urdu [Pakistan, India and Bangla Desh] - Maherbani
• Urdu (Pakistan) - Shukria
• Urdu (Pakistan) -Bahut Shukria ( Thank you very much)
• Urdu (Pakistan) - Bahut Bahut Shukria ( Thank you very very much)
• Uzbekistan (Uzbek) - Rahmat (Thanks)
• Uzbekistan (Uzbek) - Katta Rahmat (Thanks a lot)
• Vietnamese - Kam ouen
• Wales/Cymru - Diloch yn fawr (thank you very much)
• Wales/Cymru - Diolch (thanks)
• Xhosa (Africa) - Nkosi
• Yemen - Shakkran
• Yiddish - A dank
• Yiddish - Yasher Koach (KOY-ACH)
• Yoruba - Modupe
• Yugoslavia - Hvala
• Zulu - Ngiyabonga

Russian
Hooy - Cock
Pizda - Cunt
Govniuk – Shithead
Bliad’ - Whore
Pidar – Faggot

Italian
Merda – shit
pompinaio – cocksucker
Porca – slut, bitch
chiavata – fuck
affanculo – fuck it all

Tagalog (Filipino)
bak’la – faggot
Putanginamo – fuck you
pakshet - fucking shit

German
Arschloch – Asshole
schiesse – shit
hure – whore
ficken – to fuck
kacken – to shit
die moese – vagina
moesen saft – cunt juice

Portuguese
caralho – cock
chochota – cunt
chupar – blowjob
merda – shit
bosta – shit (Brazil)
paneleiro – faggot (Portugal only)
veado – faggot (Brazil)

Indian (Hindi)
behen chod – sister-fucker
chodhu – fucker
bumchod – assfucker
haraami – bastard
chinaal – whore
gaandu – faggot
chuutya – cunthole

Esperanto
forfikigi – to fuck off
pico – cunt
kaco – cock

Jamaican Patois
bumboclaat – ass-cloth
rass – ass
Rassclaat – ass-cloth
battyman – faggot
pussyclaat – pussy-cloth

Haitian
konyen – to fuck
coco – cunt
zozo – cock
masisi – faggot

Chinese (Mandarin)
shi – shit
cao – fuck
diao – cock
yang gui zi – foreign devil

Chinese (Cantonese)
Hai – cunt
ding – shit
lun – cock
diu - fuck

Icelandic
pussa – cunt
pika - cunt
hommi – faggot
hora – whore
skvetta – slut
tittlingur – cockdi

Swedish
bög - faggot
fitta – cunt
kuksigare – cockucker
knulla – fuck
kuk – cock

Hebrew
zayin – cock
Harah – shit
zona – whore
tahat – ass
koos - pussy

Via notdirtywater