Afghanistan +93 119 (Emergency Hotline)
American Samoa: +1 684 699-4211 (24-Hour Crisis Line)
Argentina: +54 11 5275 1135
Australia: +61 13 11 14
Austria: +43 142 (Telefonseelsorge)
Belgium: +32 1813 (Zelfmoordlijn 1813)
Belize: +501 911 (Emergency Hotline); 223-3292 (Ambulance)
Bolivia: +591 4 4 25 42 42 (Teléfono de la Esperanza)
Botswana: +267 3911270
Brazil: +55 188 (Centro de Valorização da Vida)
Bulgaria: +359 0035 9249 17 223 (Sofia Hotline)
Canada: +1 833 456 4566 (Toll Free); +1 45645 (Text Only) +1 866 277 3553 (For Québec residents) (Crisis Services Canada)
Chile: +56 42 22 12 00 (Teléfono de la Esperanza)
China: +86 800-810-1117 (For landlines callers); +86 010-8295-1332 for mobile and VoIP) (Beijing Suicide Research and Prevention Center)
Croatia: +385 48 33 888 (Plavi Telefon)
Cuba: +53 32 348 14 49
Czech Republic: +420 112 (Emergency Hotline)
Denmark: +45 70 201 201 (Livslinien)
Dominican Republic: +1 809 333 (Emergency Hotline)
Ecuador: +593 2 6000 477 (Teléfono de la Esperanza)
Egypt: +20 762 1602
El Salvador: +503 911 (Emergency Hotline)
Finland: +358 010 195 202 (Finnish Association for Mental Health)
France: +33 01 45 39 40 00 (Suicide écoute)
Germany: +49 0800 111 0 111 (Telefonseelsorge)
Ghana: +233 2332 444 71279 (National Lifeline)
Greece: +30 1018 (Emergency Hotline)
Greenland: +299 112 (Emergency Number)
Guam: +1 671 647-8833 (24-Hour Crisis Line)
Haiti: +509 114 (Emergency Number)
Honduras: +504 150 (Teléfono de la Esperanza)
Hong Kong: +852 2896 0000 (The Samaritans Hong Kong)
India: +91 84229845 (28, 29 or 30, depending on your area) (Samaritans Mumbai)
Iran: +98 1480 (Iran Organization of Well Being)
Iraq: +964 112 (Emergency Number); 0760-030-4100 or 0760-030-4888 (For U.S. Citizens)
Ireland: +353 116 123 (Samaritans)
Israel: +972 1201 (or 972-9 8891333 from abroad) (Eran Suidice Line)
Italy: +39 112 (National Emergency Line, offered by Servizio Per la Prevenzione del Suicidio)
Japan: +81 110 or +81 119 (National Emergency Numbers); 03-5774-0992 (TELL, English Language Helpline in Japan)
South Korea: +82 15 2525; 02 3272 4242; (2) 715 8600 (I see these three numbers for Love-Line, can't confirm which number leads where)
Laos: +856 1191 (for locals); +856 1192 (for tourists)
Liberia: +218 (2) 715 8600 (Lifeline Liberia)
Lithuania: +370 8 800 2 8888 (Crisis Hotline)
Malaysia: +60 03 79568144 (Befrienders)
Mexico: +52 55 52598121 (SAPTEL, Crisis Hotline)
Netherlands: +31 0900 0113 (113Online)
New Zealand: +64 09 5222 999 (inside of Auckland); 0800 543 354 (outside of Aukland) (Lifeline Aotearoa)
Norway: +47 116 123 (Mental Helse)
Poland: +48 89 19288; +48 89 527 00 00
Portugal: +351 225 50 60 70 (Voz de Apoio)
Romania: +40 0800 801 200 (Alianţa Română de Prevenţie a Suicidului)
Russia: +7 007 (8202) 577-577 (Samaritans in Cherepovets)
Serbia: +381 0800-300-303 (SRCE Novi Sad)
Singapore: +65 1800-221 444 (Samaritans of Signapore)
Slovakia: +421 949 760 570 (IPčko)
South Africa: +27 0800 567 567 (Suicide Crisis Line)
Spain: +34 717 003 717 (Teléfono de la Esperanza)
Sweden: +46 90101 (Självmordslinjen)
Switzerland: +41 143 (Die dargebotene Hand)
Thailand: +66 02 713 6793 (Samaritans)
Ukraine: +380 0 800 500 335 (LaStrada, more of an abuse hotline)
United Kingdom: +44 116 123 (Samaritans)
USA: +1 800 273 8255 (National Suicide Prevention Hotline)
Original list from Charriii5.