Fewer than 17% of Wikipedia profiles are about women – perhaps unsurprising when Wikipedia estimates that 85% of their editors are male.
Is there anyone you can’t believe isn’t on Wikipedia? Here’s who we’ve got on our list.
Laura Coryton: The tampon tax campaigner
Laura Coryton, 23, is the leader of the Stop Taxing Periods campaign, a global movement working to abolish VAT on sanitary products.
Sanitary products have been taxed in the UK since 1973, when the Government deemed them 'non essential' items. (Meanwhile, tax exempt items include"edible sugar flowers", "alcoholic jellies" and "exotic meats".)
Laura started an online petition in 2014, as an international relations student at Goldsmith, University of London.
Laura now works for the Labour party. She’s holding the Government to their promise through her project, Period Watch, while leading two additional campaigns.
One is working to improve sanitary products for homeless women, and the other works with refugee camps to teach women to make safe sanitary products for themselves.
Judith Webb: The first female British commander of an all-male squadron
Judith served in the Royal Signals for two decades from 1966, becoming the first female commander of an all-male British army squadron in 1982.
She retired in 1986 and became headmistress of an independent girls' school in Somerset. She now runs a children's nursery.
When she joined the armed forces at 19, no mother was allowed to serve and any woman who became pregnant had to leave within three months.
Judith was only able to start a family once she had left the Army, after 20 years of service.
Since retiring, she has surprised many by declaring that she no longer believes women should be sent to the front line.
However, she has called for more women to be appointed to senior army roles.
Stephanie Harvey: Champion gamer
Stephanie Harvey, (aka 'MissHarvey'), is one of the world’s top gamers.
She has four world championship titles under her belt, and has created an organisation committed to gender equality in gaming.
In high school, she started playing the PC shooter game Counter-Strike, and two years later was invited to join the top competitive female team - CheckSix Divas.
She later joined the team SK-Ladies, with whom she won two World Cup championships, before starting her own team, which went on to win the Electronic Sports World Cup in 2011 and 2012.
Stephanie, 30, has faced a great deal of misogyny. She speaks out about negative attitudes to female gamers and a gender pay gap estimated to leave female professional gamers making 86 cents on every dollar made by a man.
She told the BBC: “I’m not that respected within my community, because I’m a woman.”
Stephanie founded Misscliks with three fellow gamers, an online community for women and men dedicated to taking prejudice out of gaming.
Hatoon Kadi: Saudi Arabian comedian
Hatoon Kadi, mother of two and Sheffield PhD Graduate, hosts a YouTube show, called ' Noon Alnisaw'. Loosely translated as 'Femme Fatale' it boldly satirises women’s issues in Saudi Arabia.
She confronts contentious issues through her comedy - addressing Saudi Arabia’s ban on women drivers in one sketch - and is an important voice in the women’s rights community.
Unlike their male equivalents, most female Saudi comedians are unknown – yet Hatoon is a hit. Her videos have been watched over 24 million times.
She’s now gained the support of Saudi production house UTurn and has a full team working for her. More power to her, we say.
Tess Aspland: Anti-Nazi activist
Tess Aspland, 42, defied 300 neo-Nazis at a Swedish rally earlier this year.
A photo of her at a counter demonstration in Borlänge, central Sweden, fist raised against the leadership of the Nordic Resistance Movement (NRM), went viral this May.
The Swedish media compared the photograph to a famous image from 1985 known as tanten med väskan, ' the lady with the bag', depicting a woman hitting a skinhead from the Nordic Reich party.
As Tess said: “I was angry, so I stood in front of them and did a Nelson Mandela fist.
“We’re going to stand and fight these Nazis.”
Who are your female heroes not on Wikipedia? Join the Wiki-edit-a-thon.