The 2013 Little League World Series was held in South Williamsport, Pennsylvania, from August 15 until August 25. Eight teams from the United States and eight from throughout the world competed in the 67th edition of this tournament. The Musashi-Fuchū Little League of Tokyo, Japan, defeated the Eastlake Little League of Chula Vista, California, 6–4 in the championship game. For the country of Japan, this was their ninth LLWS championship overall, second consecutive, and the third in four years. This was the last World Series to feature players born in the 20th century. 
 It was announced on August 29, 2012 that three of the eight international regions had been realigned. The results of the realignment included Australia having its own region, meaning that the national champion of that country would be given a berth into the Little League World Series. Also, teams from Middle Eastern countries (except Israel and Turkey) would compete to qualify with teams in the Asia-Pacific Region to form the Asia-Pacific and Middle East region. Teams from Africa would compete to qualify with teams from Europe to form the Europe and Africa region.
  Taoyuan, Chinese Taipei
  Perth, WA
  Nepean, ON
  San Lorenzo, Puerto Rico
  Brno, Czech Republic
  Fuchu, Tokyo
  Aguadulce, Panama
  Tijuana, Baja California
 Shao-Hua Chung
 Yu-Chun Chung
 Chao-Wei Huang
 Huai-Chien Lan
 Chen-Hsun Lee
 Shu-Ming Lee
 Chia-Ming Lin
 Teng-Yu Wang
 Kai-En Wu
 Tung-Hua Yeh
 Ching-Fong Yu
 Teng-Yao Yu
 Mitchell Brown
 Chase Diggins
 Kieren Hall
 Maverick Hamilton
 Caydyn Hancock
 Todd Hatcher
 Luke Houston
 Danny Ivester
 Jake Sheldon
 Zane Tavinor
 Michael Tovey
 Shane Turner
 Dylan Walsh
 David Caon
 Cole Dennison
 Justin Dineen
 Davide Disipio
 Caden Griffin
 David Legault
 Kai Nguyen
 Ken Nguyen
 Will Riopelle
 Clay Surrett
 Jack Walsh
 Jason Zhang
 Pedro Aponte
 Edgar Baez
 Yan Contreras
 Braulio Flores
 Leonardo Lizardi
 Yamil Munoz
 Jan Osorio
 Pablo Sanchez
 Gabriel Santiago
 Tommylee Sierra
 Israel Velazquez
 Yamil Velazquez
 Christian Geidl
 Lukas Hlouch
 Krystof Jan Hruza
 Tomas Jurcik
 Marek Krejcirik
 Tomas Kuba
 Eliska Stejskalova
 Daniel Stoudek
 Martin Svihalek
 Robin Vavra
 Victor Vecerka
 Ryusei Hirooka
 Kazuki Ishida
 Kyousuke Kobayashi
 Sho Miyao
 Kouyou Mizushima
 Tatsuki Nagano
 Seiya Nishino
 Dai Okada
 Keita Saito
 Jintarou Shiina
 Shunpei Takagi
 Ryutarro Takeo
 Kensuke Tsuchida
 Jean Cornejo
 Juan Crisp
 Carmelo Cruz
 Radameth De Leon
 Rafael Eysseric
 Daniel Fernandez
 Jose Gonzalez
 Armando Lopez
 Daniel Polo
 Edgardo Rosales
 Azarel Salado
 Jean Mar Sanchez
 Tomas Sarmiento
 Miguel Artalejo
 Luis Corral
 Jorge Duenas
 Saul Favela
 Martin Gonzalez
 Axcel Mandujano
 Luis Manzo
 Ramon Mendoza
 Brandon Meza
 Brandon Montes
 Jorge Rodriguez
 Jorge Romero
  Grosse Pointe, MI
  Newark, DE
  Urbandale, IA
  Westport, CT
  Sammamish, WA
  Nashville, TN
  Corpus Christi, TX
  Chula Vista, CA
 John Cullen
 Ryan Duffy
 Tyler Hill
 John Lizza
 Chad Lorkowski
 Thomas Maxey
 James Mazzola
 Antonio Moceri
 Joseph Rheaume
 Ryan Shanley
 Jack Vyletel
 Evan Zschering
 Justin Courter
 Joseph Davis
 Brian Green
 Jack Hardcastle
 Nathan Hardcastle
 David Hawtof
 Eric Ludman
 Ryan Miller
 Jared Owens
 Brandon Sengphachanh
 Nick Sharpe
 Brenden Ball
 Chase Brundage
 Ty Cowley
 Grant Garwood
 Brook Heinen
 Joshua Neyens
 Will Pattison
 Sam Petrillo
 Garrett Purcell
 Brady Roberts
 Lucas Strain
 Carter Troncin
 Sam Young
 Matt Brown
 Christopher Drbal
 Chad Knight
 Tatin Llamas
 Ricky Offenberg
 Max Popken
 Alex Reiner
 Drew Rogers
 Charlie Roof
 Matt Stone
 Cameron Bowers
 Adam Carper
 Jack Carper
 Dalton Chandler
 Jacob Dahlstrom
 Bryce Delay
 Nathan Fitzgibbons
 Jack Matheson
 Dylan Matsuoka
 Austin Oh
 Zack Olson
 Jack Rud
 Jack Titus
 Robert Hassell
 Austin Kasick
 Blake Kirchenbauer
 Chris McElvain
 Trae McLemore
 Blake Money
 Tanner Morgan
 Ben Pickman
 Knox Preston
 Bricen Russell
 Conner Smith
 Jared Cruz
 Brandon DeLeon
 Evan Elizaldi
 Jacob Garza
 Oscar Hernandez
 Juan Jasso
 Jesus Ortiz
 Josh Ramirez
 Lonnie Rocha
 Christian Servantes
 Juan Rosa
 Kevin Bateman II
 Giancarlo Cortez
 Jake Espinoza
 Michael Gaines
 Dominic Haley
 Grant Holman
 Nick Mora
 Charly Peterson
 Micah Pietila-Wiggs
 Ricky Tibbett
 Rennard Williams
 The drawing to determine the opening round pairings took place on June 13, 2013.
 Teams that lost their first two games played a crossover game against a team from the other side of the bracket that also lost its first two games. These games were labeled Game A and Game B. This provided teams who were already eliminated the opportunity to play a third game.
 The consolation game is played between the loser of the United States championship and the loser of the International championship.
 Grant Holman of the Eastlake Little League (Chula Vista, CA)  tossed a no-hitter in the sixth game of the tournament against Grosse Pointe, Michigan.
 The Musashi Fuchū LL reached the LLWS by winning all eight of their Tokyo and national tournament games. In total, they went undefeated with a 13–0 record.