tarot-sybarite:

Depression:

• Suicide Hotline: 1-800-SUICIDE (2433) – Can use in US, U.K., Canada and Singapore
• Suicide Crisis Line: 1-800-999-9999
• National Suicide Prevention Helpline: 1-800-273-TALK (8245)
• National Adolescent Suicide Helpline: 1-800-621-4000
• Postpartum Depression: 1-800-PPD-MOMS
• NDMDA Depression Hotline – Support Group: 1-800-826-3632
• Veterans: 1-877-VET2VET
• Crisis Help Line – For Any Kind of Crisis: 1-800-233-4357
• Suicide & Depression Crisis Line – Covenant House: 1-800-999-9999
• Survivors of Bereavement by Suicide: (UK only) 0844-561-6855
• Beyondblue info line: (Australia only) 1300-22-4636
• 24/7 Crisis Line:(Canada only) 905-522-1477
• Lifeline Australia: 13-11-14

Domestic Abuse:

• National Child Abuse Helpline: 1-800-422-4453
• National Domestic Violence Crisis Line: 1-800-799-SAFE (7233)
• National Domestic Violence Hotline (TDD): 1-800-787-32324
• Center for the Prevention of School Violence: 1-800-299-6504
• Child Abuse Helpline: 1-800-4-A-CHILD (1-800-422-4453)
• Domestic Violence Helpline: 1-800-548-2722
• Healing Woman Foundation (Abuse): 1-800-477-4111
• Child Abuse Hotline Support & Information: 1-800-792-5200
• Women’s Aid National Domestic Violence Helpline: (UK Only) 0345 023 468
• Sexual Abuse Centre: (UK Only) 0117 935 1707
• Sexual Assault Support (24/7, English & Spanish): 1-800-223-5001
• Domestic & Teen Dating Violence (English & Spanish: 1-800-992-2600
• Relationships Australia: 1300-364-277

Alcohol & Drug Abuse:

• National Association for Children of Alcoholics: 1-888-55-4COAS (1-888-554-2627)
• National Drug Abuse: 1-800-662-HELP (4357)
• Al-Anon/Alateen Hope & Help for young people who are the relatives & friends of a problem drinker): 1-800-344-2666
• Alcohol/Drug Abuse Hotline: 1-800-662-HELP (4357)
• Be Sober Hotline: 1-800-BE-SOBER (1-800-237-6237)
• Cocaine Help Line: 1-800-COCAINE (1-800-262-2463)
• 24 Hour Cocaine Support Line: 1-800-992-9239
• Ecstasy Addiction: 1-800-468-6933
• Marijuana Anonymous: 1-800-766-6779

Youth & Teen Hotlines:

• National Youth Crisis Support: 1-800-448-4663
• Youth America Hotline: 1-877-YOUTHLINE (1-877-968-8454)
• Covenant House Nine-Line (Teens): 1-800-999-9999
• Boys Town National: 1-800-448-3000
• Teen Helpline: 1-800-400-0900
• TeenLine: 1-800-522-8336
• Youth Crisis Support: 1-800-448-4663 or 1-800-422-0009
• Runaway Support (All Calls are Confidential): 800-231-694
• National Runaway Hotline: (US only) 1800-231-6946
• Child Helpline: (UK Only) 0800-111
• Kids Helpline: (Australia) 1800-55-1800
• Youth to Youth: (UK only) 020-8896-3675
• Kids Help Phone Canada: 1800-688-6868
• National Youth Crisis Hotline:(US only) 800-442-442-4673 

Pregnancy Hotlines:

• AAA Crisis Pregnancy Center: 1-800-560-0717
• Pregnancy Support: 1-800-4-OPTIONS (1-800-467-8466)
• Pregnancy National Helpline: 1-800-356-5761
• Young Pregnant Support: 1-800 550-4900

Gay and Lesbian Hotlines:

• The Trevor Helpline (For homosexuality questions or problems): 1-800-850-8078
• Gay & Lesbian National Support: 1-888-THE-GLNH (1-888-843-4564)
• Gay, Lesbian, Bisexual, and Transgender (GLBT) Youth Support Line: 1-800-850-8078
• Lesbian & Gay Switchboard: (UK Only) 0121 622 6589
• Lothian Gay & Lesbian Switchboard – Scotland: (Scotland Only) 0131 556 4049

Other Hotlines:

• Self-Injury Support: 1-800-DONT CUT (1-800-366-8288) (www.selfinjury.com)
• Eating Disorders Awareness and Prevention: 1-800-931-2237 (Hours: 8am-noon daily, PST)
• Eating Disorders Center: 1-888-236-1188
• Help Finding a Therapist: 1-800-THERAPIST (1-800-843-7274)
• Panic Disorder Information and Support: 1-800-64-PANIC (1-800-647-2642)
• TalkZone (Peer Counselors): 1-800-475-TALK (1-800-475-2855)
• Parental Stress Hotline: 1-800-632-8188
• Parent Help Line (Australia only): 1300-364-100
• National AIDS Helpline: (UK Only) 0800 567 123
• Mensline Australia: 1300-789-978

Want a country by country list? Here are some more resources: helplines

The following sites also provides a country by country list of helplines available: 

• befrienders
• international suicide hotlines