Good Twitter List by Mark Silva on Listorious

Jason Mraz

The Official Jason Mraz You Very Much Twitter Account. For the latest album news & tour updates, follow Team Mraz: @theRKOP

3,732,618 followers | Follow

Yoko Ono

I love dancing. I think it's better to dance than to march through life.

2,396,820 followers | Follow

richardbranson

Founder of Virgin Group: @virgin

2,146,346 followers | Follow

charity: water

charity: water is a non-profit organization bringing clean and safe drinking water to people in developing nations.

1,373,354 followers | Follow

Doug Ulman

Cancer survivor, father, Pres/CEO of LAF, runner, golfer, traveler, social activist, optimist, avid reader, and fearful flyer.

1,068,414 followers | Follow

UNICEF

Founded in 1946, the United Nations Children's Fund (UNICEF) is the driving force that helps build a world where the rights of every child are realized.

1,060,503 followers | Follow

joinRED

Bringing people and brands together to help fight AIDS in Africa. Join us! Follow (RED).

1,035,215 followers | Follow

Michelle Obama

This account is run by #Obama2012 campaign staff. Tweets from the First Lady are signed -mo.

977,964 followers | Follow

Deepak Chopra

952,732 followers | Follow

GOOD

GOOD is the global association of individuals, businesses, and nonprofits powering what works.

760,394 followers | Follow

Gates Foundation

We work to help all people lead healthy, productive lives, focused on health, poverty, and opportunity. Follow our work on @gateshealth, @gatesag, and @gatesed.

745,981 followers | Follow

WWF

Simply put: WWF is in the business of saving our one and only planet.

710,519 followers | Follow

American Red Cross

Official twitter stream for the American Red Cross. Follow us for disaster and preparedness updates.

705,728 followers | Follow

ONE

ONE is a grassroots campaign of 3 million people committed to the fight against extreme poverty and preventable diseases.

614,993 followers | Follow

Room to Read

We partner with communities in Asia & Africa to transform the lives of millions of children through literacy and gender equality in education.

569,892 followers | Follow

Kiva

Connecting people around the world through lending to alleviate poverty. Change a life with a $25 loan.

464,057 followers | Follow

Peace Corps

Welcome to the official Peace Corps Twitter! Life is calling. How far will you go? Tweets by Amber, follows & RTs are not endorsements, thanks for following us!

457,861 followers | Follow

AmnestyInternational

We've been fighting the bad guys since 1961 - you can join us! Get the latest #humanrights news and actions. Official Amnesty International USA profile.

439,131 followers | Follow

Jacqueline Novogratz

CEO, Acumen Fund (@acumenfund) and author, The Blue Sweater (www.thebluesweater.com)

418,237 followers | Follow

Human Rights Watch

HRW provides timely information about human rights crises and developments in 90 countries around the world. Curated by @jimmurphysf. Our Staff: @hrw/our-people

351,769 followers | Follow

Claire Diaz-Ortiz

I lead social innovation at Twitter & wrote Twitter for Good. {Me: MBA, Stanford, Oxford, Skoll Foundation, Hope Runs, Blogger, Author, Speaker.}

325,424 followers | Follow

LIVESTRONG

LIVESTRONG serves people affected by cancer and empowers them to take action against the world's leading cause of death.

288,703 followers | Follow

World Food Programme

The official World Food Programme Twitter page - fighting hunger worldwide. If you're reading this... you can help! Go to http://www.wfp.org/get-involved

283,272 followers | Follow

Oxfam International

Int'l confederation of 17 like-minded organizations working together & with partners around the world to bring about lasting solutions to poverty & injustice.

265,861 followers | Follow

HSUS

Official Twitter feed from The Humane Society of the United States. We're celebrating animals and confronting cruelty... all day, every day!

122,079 followers | Follow

UNICEF USA

21,000 children die every day from preventable causes. We believe that number should be zero. Do you believe in ZERO?

82,243 followers | Follow

Make-A-Wish America

We grant the wishes of children with life-threatening medical conditions to enrich the human experience with hope, strength and joy

70,203 followers | Follow

Blake Mycoskie

Chief Shoe Giver and Founder of TOMS. One for One.

44,033 followers | Follow

GlobalGiving

The world is full of problems. GlobalGiving is full of solutions. 10+ years, 1,000+ projects in 100+ countries in 140 characters.

42,370 followers | Follow

Rainforest Alliance

International nonprofit organization working to conserve biodiversity and ensure sustainable livelihoods

25,974 followers | Follow

Save Darfur

The Save Darfur Coalition raises awareness about genocide in Darfur. Save Darfur and Genocide Intervention Network have merged to become United to End Genocide.

13,377 followers | Follow

One Laptop per Child

One Laptop per Child is a non-profit organization working to provide access to education to every child in the world

13,027 followers | Follow

Matthew Zachary

Founder/CEO at Stupid Cancer, Cancer Patient Advocate, Digital Health and Social Media Strategist, Public Speaker, Daddy of Twins

11,163 followers | Follow

Salvation Army USA

Links, stories and helpful info about The Salvation Army USA! Visit our blog for more http://tinyurl.com/TSASite God bless you!

10,656 followers | Follow

The Hunger Project

Empowering women & men in Africa, South Asia & Latin America to end their own hunger & poverty since 1977. Up-to-date tweets on issues that matter.

10,522 followers | Follow

Jumo

Together we can speed the pace of global change.

9,885 followers | Follow

MailOurMilitary

eMailOurMilitary.com supports troops via email, mail and care packages since 2001. Using social media to support our troops. About us: http://bit.ly/HpF02 #eMOM

9,586 followers | Follow

Autism Speaks - LA

Stay up to date with the happenings and goings on of our great organization and chapter. Both local, regional and national news and events.

9,479 followers | Follow

Jess

Creating a Confident World Together

8,879 followers | Follow

Reeve Foundation

Dedicated to curing spinal cord injury by funding innovative research and improving the quality of life for individuals living with paralysis.

8,609 followers | Follow

One Day's Wages

A new movement of People, Stories, and Actions to alleviate extreme global poverty. Learn how 0.4% (your one day's wages) can make a dramatic & global impact.

7,675 followers | Follow

Planet Cancer

A community of support for young adults with cancer.

7,568 followers | Follow

Josh Nesbit

CEO of @Medic, global health + mobile technology, @Stanford alumnus, @IntraHealth board member, optimist.

5,061 followers | Follow

Bill Silva Mgmt.

We manage Jason Mraz, Christina Perri, Robert Francis, Good Old War & Tom Andrews. Follow Bill Silva @billsilvala.

3,556 followers | Follow

Jeremy Heimans

CEO/co-founder @Purpose. Co-founder @GetUp, @Avaaz, @AllOut. My story: http://youtu.be/3OGK4Q6PKUI

3,267 followers | Follow

HOPE worldwide

Bringing hope. Changing lives.

2,124 followers | Follow

Hank

I exist to remind you that you are awesome.

1,386 followers | Follow

The LAST MILE

Insights from the men of The Last Mile. Tweets written by the inmates at San Quentin prison and input into Twitter by volunteers. Social media at a distance.

1,090 followers | Follow