| Country | Day | Month | Names |
 USA | 1 | October | Carter, Rea, Remington, Remus, Remi, Remy, Rhea, Rhiannon |
| USA | 2 | October | Ackerley, Ackley, Adair, Forest, Forester, Forrest, Foster, Elwood |
| USA | 3 | October | Erskine, Esmond, India, Kali, Kallie, Kelvin |
| USA | 4 | October | Damara, Damaris, Berenice, Bernice, Bonita, Bonnie, Bunny, Fannie, Fanny, Frances, Francesca, Francesco, Francine, Francis, Francisco, Frank, Frankie |
| USA | 5 | October | Chester, Cheston, Chet, Nia, Nyah |
| USA | 6 | October | Bron, Bronson, Brown, Bruno, Burnet, Burnett |
| USA | 7 | October | Minerva, Miranda, Sargent, Sergeant, Sergio |
| USA | 8 | October | Demetrius, Demetria, Demetrio, Demi, Dimitri, Stewart, Stuart |
| USA | 9 | October | Denice, Denis, Denise, Dennis, Denny, Dion, Gunnar, Gunther, Leif |
| USA | 10 | October | Dan, Dana, Dane, Danica, Daniel, Daniela, Daniella, Danielle, Danny |
| USA | 11 | October | Canice, Kambelyn, Ken, Kendall, Kendra, Kennedy, Kenneth, Kenny, Kent, Kenton, Kim, Kimball, Kimberley, Kimberly, Kimberlyn, Kimi, Tate, Tatum |
| USA | 12 | October | Christopher, Cristopher, Kester, Kristofer, Kristopher |
| USA | 13 | October | Eddie, Eddy, Eduardo, Edward, Edwardine, Ned |
| USA | 14 | October | Calista, Dwight, Fortino, Fortuna, Glennis, Glynnis |
| USA | 15 | October | Essence, Terence, Teresa, Terrance, Terrence, Terri, Terry, Tess, Tessa, Theresa, Trace, Tracey, Traci, Tracy |
| USA | 16 | October | Avice, Avis, Gerar, Gerard, Gerardo, Gerrard, Hedda, Hedwig, Hedy, Heide, Heidi, Jerard, Noah, Noe |
| USA | 17 | October | Brad, Braden, Bradford, Bradley, Brady, Braeden, Brayden, Braydon, Rodolfo, Rudi, Rudolf, Rudolph, Rudolphine, Rudy |
| USA | 18 | October | Blaine, Blair, Blane, Luca, Lucas, Lukas, Luke, Wynn, Wynton |
| USA | 19 | October | Cleo, Cleon, Cleopatra, Howard, Howie |
| USA | 20 | October | Acca, Accalia, Deon, Deondre, Deonte, Hobson, Hogan |
| USA | 21 | October | Celina, Celine, Nobel, Selena, Selina, Ursula, Wanda, Wendall, Wendell, Wendy |
| USA | 22 | October | Cordelia, Cordell, Cordella, Delia, Delilah |
| USA | 23 | October | Fifi, Josefina, Josepha, Josephina, Josephine, Josie, Pepita |
| USA | 24 | October | Denver, Rafael, Rafaela, Raphael, Raphaela |
| USA | 25 | October | Denzel, Crispin, Crispina, Gavin, Gawen |
| USA | 26 | October | Madden, Maddock, Maddox, Mahala, Mahalia, Makenna, Mckenna |
| USA | 27 | October | Cale, Caleb, Feodor, Isaac, Isaak, Issac, Izaac, Kaleb, Ted, Teddy, Teodor, Theodora, Theodore |
| USA | 28 | October | Dayanara, Eunice, Jonah, Jonas, Jude, Liberty, Simeon, Simon, Simone, Thad, Thaddea, Thaddeus |
| USA | 29 | October | Garrison, Cyrano, Cyrena, Narcissa, Narcissus |
| USA | 30 | October | Arilda, Xena, Xenia, Ximena, Zena, Zenas, Zenia, Zeno, Zenobia |
| USA | 31 | October | Cruz, Flint, Flynn, Kruz, Trent, Trenton |
