H:
- Hachikō the Dog, Remembered For His Loyalty to His Owner, Even Years After His Death
- Hannah Adams, The First Woman to Work Professionally as a Writer in the United States
- Hannah Anderson Ropes, Nurse During the War Between the States
- Hannah Duston, This Colonial Revenge Story is Sure to Sicken The Masses
- Hannah Snell, Soldier and Sailor
- Hannah Stilley Gorby, The Oldest Person Ever Photographed
- Hannah Szenes, Poet and SOE Paratrooper During World War II
- Hannah White Arnett, Revolutionary War Patriot
- Hans Scholl, a founding member of the White Rose Resistance Movement
- Harambe the Gorilla, The World Will Never Be the Same
- Harnaam Kaur, The Bearded Lady and Activist
- Harold Baumgarten, Who says bullets can stop a man?
- Harriet Beecher Stowe, Author of Uncle Tom's Cabin, which was a major factor in the outbreak of the War Between the States
- Harriet Quimby, The First United States Woman to Earn Her Pilot's License
- Harriet Tubman, Union Spy and Civil Rights Activist
- Harrison Ruffin Tyler, Grandson of the 10th US President
- Harry Burton, the photographer hired for most of the Egyptian excavations in the early 20th Century
- Harry Gordon Selfridge, Founder of Selfridge's Department Store
- Hatshepsut, the most famous female Egyptian Pharaoh
- Hattie Lewis Lawton, Pinkerton Detective
- Hattie McDaniel, The First African-American to win an Academy Award
- Dr. Hawa Abdi, Human Rights Activist and Doctor
- Heather O'Rourke, "They're Here!"
- Hedy Lamarr, Beauty and Brains
- Hedviga Golik, Quiet Woman Whose Body Went Undiscovered in Her Own Apartment for Forty-Two Years
- Heidi Fleiss, Hollywood's Most Notorious Madam
- Helen Graham-Gill PhD, Mother, Grandmother, Teacher, and so Much More
- Helen Longstreet, Widow of General James Longstreet and Passionate Advocate for Various Causes
- Helen Keller, she proved deaf and blind are labels only
- Helen Purviance, The Donut Queen of World War II
- Helmuth Hübener, the youngest person to ever be executed by the Nazi's People's Court
- Henri Charrière, The Real Papillon
- Henri Mouhot, You've heard of Angkor Wat because of him
- Henrietta Lacks, she is more than her cells
- Henrietta Swan Leavitt, The Women who Discovered How to Measure the Universe
- Henry Darger, Total recluse? Yes. Sci-Fi Extraordinaire Artist? Also yes.
- Henry Laurens, the first person to request to be cremated in the United States
- Henryk Ross, Photographer of the Łódź Ghetto
- Hertha Ayrton, inventor and electrical engineer
- Hessy Levinsons Taft, The "Perfect Aryan Baby"...Who Happens to be Jewish
- Hester Stanhope, The Queen of the East
- Hetepheres I, Queen of Ancient Egypt
- Heyward Shepherd, The Forgotten Victim of the Raid on Harper's Ferry
- Hildegard von Bingen, Catholic Nun who defied gender norms
- Hipparchia, Greek Philosopher
- Hiroo Onoda, Japanese soldier from World War II who refused to surrender until 1974
- Hoelun, Mother of Genghis Khan
- Hortensia, Famed Roman Orator
- Huda Sharawi, Founder of the Egyptian Feminist Union
- Hürrem Sultan, she was also called Roxelana
- Hurricane, Most Decorated K9 in US History
- Hypatia of Alexandria, she's my number one for a reason
I:
- The Ice Maiden of Pazyryk, Her mummy shed new light on her mysterious people
- Ida Lewis, Heroic Lighthouse Keeper
- Ida B Wells, Journalist and Activist
- Ida Remington, Union Soldier During the War Between the States
- Ida Straus, Mrs. Macy's and RMS Titanic victim
- Ignaz Semmelweis, he told people washing your hands was a good idea
- Imelda Marcos, Former First Lady of the United States
- Indira Gandhi, India's First Female Prime Minister
- Indra Nooyi, former CEO of PepsiCo
- Ines de Castro, Mistress and Posthumously Recognized Wife of Peter I of Portugal
- Inez Milholland, Literally Campaigned Herself to Death for the Cause of Suffrage
- Irena Sendler, Savior of Children During the Shoah
- Irene Drummond, Head Nurse Killed in the Bangka Island Massacre
- Irene Morgan Kirkaldy, Was Kicked Off a Bus Eleven Years Before Rosa Parks
- Irene Joliot-Curie, Marie's Daughter and a Scientist in Her Own Right
- Irene Triplett, The Last Beneficiary of a War Between the States Pension
- Iris Burton, Hollywood Child Star Agent
- Irma Eckler Landmesser, She and Her Husband Are Remembered For Their Heartbreaking Real Life Story
- Irtyau, Scribe to Nitocris
- Isabel Godin des Odonais, Survived Trekking Through The Amazon Jungle on Her Own
- Isabel de Guevara, One of the First Female Spanish Colonists in the New World
- Isabel Martinez de Peron, the First Female President of Argentina
- Isabella I of Castile, Queen of Castile
- Isabella II, Queen of Spain
- Isabella Bird Bishop, Travel Writer and Naturalist
- Isabella of France, Queen of England
- Isabella Hagner James, The First Salaried Employee of a United States First Lady
- Isadora Duncan, Mother of Modern Dance
- Israel Putnam, "Don't Shoot Until You See the Whites of Their Eyes!"
- Iva Toguri D'Aquino, The 7th Person in US History to be Found Guilty of Treason
- Ivana Trump, Businesswoman, Author, and Former Model
- Ivanka Trump, Businesswoman and Advisor to President Trump
J:
- Signalman Jack the Baboon, Worked at a Railroad for Nine Years
- Captain Jack Kintpuash, Leader of the Modoc during the Modoc War
- Jack Van Arsdale, The Man Who Inspired Evacuation Day Celebrations
- Jackie Mitchell, At the Age of Seventeen She Struck Out Babe Ruth & Lou Gehrig
- Capt Jacklyn Lucas, there's a reason his autobiography was entitled Indestructible
- Jacqueline Kennedy Onassis, First Lady and Style Icon
- Jadwiga, First Female Monarch of the Kingdom of Poland
- James Clerk Maxwell, without him you never would have heard of Einstein
- Father James Coyle, he was murdered for an act of kindness
- James Doohan, actor who was shot six times by friendly fire during D-Day
- James Dunwoody Bulloch, The Confederate Navy's Greatest Asset
- James Parks, a freedman who is prominently buried in Arlington National Cemetery
- Colonel James Rowe, one of thirty-four prisoners to escape captivity during the Vietnam War
- James Wilson Marshall, he found the small sliver of gold that struck the '49 Rush
- Jan Brewer, Former Governor of Arizona
- Jan Zabinksi, Zookeeper of the Warsaw Zoo
- Jan Zwartendijk, worked alongside Sugihara to see 6,000 Jews survive the Shoah
- Janaki Ammal, Botanist
- Jane Austen, novelist
- Jane Dickenson, Indentured Servant and Captive of the Pamunkey Tribe
- Jane Dieulafoy, Crossdressing Archaeologist
- Lady Jane Franklin, Sponsor of Several Arctic Expeditions
- Jane Goodall, Primatologist
- Jane Grey, queen of England for a whole nine days
- Jane Haining, Missionary and One of Ten Confirmed Scotsmen to Have Died in a Nazi Concentration Camp
- Jane Seymour, Henry VIII's third wife
- Jane Sharp, Midwife
- Jane Stanford, Co-Founder of Stanford University
- Jane C Wright, Oncologist and Pioneering Cancer Researcher
- Janet Guthrie, the first woman to compete in both Indianapolis 500 and Daytona 500
- Janet Jackson, Multi-talented Singer and More
- Janet Parker, The Last Known Victim of Smallpox
- Janet Wojcicki, Anthropologist and Epidemiologist
- Janet Yellen, Former Chair of the United States Federal Reserve
- Janice Hooker, The Woman Who Helped Kidnap and Then Later Help Colleen Escape
- Janis Joplin, Musician and Member of the Twenty-Seven Club
- Jason Everman, he went from playing in bands like Nirvana & Soundgarden to serving as an Army Ranger & Green Beret
- Jaya Varma Sinha, Manager of the South Eastern Indian Railways System
- Jaycee Lee Dugard, Kidnap Victim and Author
- Jayne Mansfield, Actress and Mother of Mariska Hargitay
- Jean Laborde, The Man Who Industrialized Madagascar
- Jean Paul, advocate and wife of the chief of the Maliseet Tribe
- Jean-Francois Champollion, one of the most important figures in translating Egyptian Hieroglyphs
- Jeanette Churchill, So much more than Winston's Mum
- Judge Jeanine Pirro, There's not a lot she wasn't the First Female of in terms of law positions in Westchester County
- Jeanne Becu, mistress to Louis XV of France
- Jeanne Boulet, Victim of the Beast of Gevauden
- Jeanne Louise Calment, The Longest Living Confirmed Person in World History
- Jeanne Hebuterne, Painter and Model
- Jeanne Poisson, mistress to Louis XV of France
- Jeannette Rankin, the first woman elected to US Congress
- Jeannie Rousseau, World War II Spy
- Jeff Cooper, Firearms Expert
- Jennie Wade, The Only Civilian Killed at the Battle of Gettysburg
- Jennie Bauters, Jerome, Arizona's Most Notorious Madam
- Jennifer Lee, Director, Screenwriter, and More
- Jezebel, Biblical Queen
- Jillian Michaels, Fitness Trainer and So Much More
- Jo Ann Jenkins, Former CEO of AARP
- Joachim Rønneberg, commander of Operation Gunnerside
- Pope Joan, Catholic Pope--Possibly
- Joan of Arc, Heavenly Warrior
- Joan Beauchamp Procter, Zoologist and Herpetologist
- Joan Crawford, One of Hollywood's Most Famous Actresses
- Joan Lee, Author, Actress, Model, and Wife of Stan the Man
- Joan Rivers, Comedian
- Joan Whitney-Payson, the First Woman to Buy Major Interest Into a North American Sports League Team
- Joanna of Castile, Queen of Castile and Aragon
- Joanna Palani, Freedom Fighter
- Joanne Hayes-White, The First Woman to Serve as Chief of San Francisco's Fire Department
- Joanne Winter, Baseball and Golf Player
- Jocelyn Bell Burnell, Astrophysicist
- Jodie Foster, Actress and Director
- John Collins, RMS Titanic Survivor
- John Glenn, that's one small step for a man
- John Harington, the man who named his toilet Ajax (it also just happened to be the first flushing toilet)
- John Killian Wren, the first FBI Agent of Native American Heritage
- Lt. Col. John Malcolm Thorpe Fleming Churchill, he fought in World War II armed with bagpipes, a broadsword, and a longbow
- John B Ryerson, RMS Titanic Survivor
- John Thayer III, RMS Titanic Survivor
- John Walsh, Host of America's Most Wanted
- Private John Williams, the last casualty of the War Between the States
- John Peter Zenger, Free Speech For Me!
- Joice Heth, PT Barnum's First Human Display
- JonBenet Ramsey, the pageant princess who never got to become a queen
- Josefina Guerrero, The Leper Spy
- Joseph Goldberger, you don't know what pellagra is because of him (be thankful)
- Joseph LaPointe Jr, Conscientious Objector and Medal of Honor Recipient
- Joseph Lister, the man who pioneered antiseptic medicine
- Josephine de Beauharnais Bonaparte, Empress of France
- Josephine Hensley, Influential Landowner in Montana's Wild West
- Josephine S Lowell, Philanthropist and Advocate For Various Social Welfare Programs
- Joy Mangano, Jennifer Lawrence plays her in the movie!
- Józef Piłsudski, the first leader of a unified Modern Poland
- Juana Maria, the Lone Woman of San Nicholas Island
- Juanita Brooks, Historian who Uncovered the Truth of the Mountain Meadows Massacre
- Judith Barsi, Child Actress
- Judith Exner, Allegedly JFK's Mistress
- Judy Garland, Actress and Singer
- Julia Agrippina, The First Roman Empress
- Julia Child, Celebrity Chef
- Julia Drusilla The Younger, Caligula's Only Legitimate Child
- Julia the Elder, Augustus's Only Biological Child
- Julia Gnuse, The Most Tattooed Lady in the World
- Julia Grant, The First Lady during her husband Ulysses S Grant's term
- Julian Assange, *Cue angry comments in 3...2...1*
- Julie Andrews, Academy Award Winning Actress
- Julie d'Aubigny, The Bisexual Sword Swinging Opera Singer
- Julie Krone, The First Female Horse Jockey to Win the Triple Crown
- Julien Bryan, documentarian who illegally recorded life inside Berlin
- Juliet Opie Hopkins, Confederate Nurse during the War Between the States
- Juliette Lewis, Actress
- June Carter Cash, Musician, Member of the Carter Family, and Johnny Cash's Wife
- Junko Tabei, the First Woman to Climb Mt. Everest
- Justa Grata Honoria, you know how we're taught the Goths sacked Rome and ended the Western Roman Empire? Yeah, that was her fault
- Justin Wren, The Big Pygmy
- Jyoti Amge, The Smallest Living Woman in the World
- Jyoti Singh, remember her name, fight for it to never happen again