The U.S. Women's National Team scored a majority of its goals in the first 20 minutes of the game.
USA midfielder and co-captain Carli Lloyd netted three goals in the third, fifth, and 16th minutes of the first half; one of which was scored from 54 yards out.
Fellow midfielder Lauren Holiday added to the onslaught of goals in the 14th minute.
But Japan answered in the 27th minute with a goal from Yuki Ogimi.
The second half brought an own goal by USA defender Julie Johnston, but it was followed immediately by a goal from USA midfielder Tobin Heath in the 54th minute.
The United States sealed this 5-2 score until the final whistle.
The United States and Japan have a storied history when it comes to their women's soccer teams.
In the 2011 FIFA Women's World Cup final, Japan ousted the USA in penalty kicks, earning the team's first World Cup title in the process.
The squads faced off again the following year in the 2012 Summer Olympics in London, but in that meeting it was team USA that took home the gold.
Team USA celebrates as they are handed their third FIFA Women's World Cup championship trophy
In addition to their FIFA Women's World Cup gold medals, some members of the U.S. Women's National Team earned additional accolades.
Carli Lloyd earned both the Silver Boot and Golden Ball awards for her six goals and one assist in this year's World Cup. The latter trophy is given to the player deemed best in the tournament.
American goalie Hope Solo won the Golden Glove, given to the best goalkeeper in the tournament.
FIFA President Sepp Blatter was not present on the podium to award USA and Japan their medals, reportedly out of concern for the publicity it would attract.
And that's the match! USA beats Japan 5-2, making history as the first team in the FIFA Women's World Cup to win three championship titles.
USA co-captain Abby Wambach, who will play in her final Women's World Cup game, replaces Tobin Heath in the 80th minute.
Wambach is a former FIFA Women's World Cup Player of the Year. With 183 goals in 247 international matches, she is currently the leading international scorer among both men and women.
Megan Rapinoe (top) who celebrates her 30th birthday today, is the USA's first substitution in the game. Kelley O'Hara, who scored against Germany in the semi-final, replaces her.
Watch a replay of Heath's goal here.
Immediately after conceding an own goal, USA midfielder Tobin Heath nets a goal. USA widens its lead again at 5-2.
An own goal from American defender Julie Johnston earns Japan another goal in the final, putting the match at 4-2 with a USA lead.
USA holds its lead over Japan at 4-1 into the half.
The score makes this match the highest-scoring Women's World Cup final in FIFA's history. The two teams held the previous record from their last meeting in 2011, when the score at the end of regulation was 2-2.
To recap, Carli Lloyd scored two goals two minutes apart from each other, in the third and fifth minutes of the match. On her third, which came in the 16th minute of play, Lloyd caught Japan's goalkeeper Ayumi Kaihori off her line and drove the ball from 54 yards out.
Kaihori got a hand on the ball as it bounced over her glove and into the net.
Two minutes before Lloyd's hat trick goal, midfielder Lauren Holiday connected with a near-perfect volley and drove the ball to the back of the net in the 14th minute.
Japan answered the United States' scoring streak in the 27th minute, when Yuki Ogimi made a quick turn and beat American goalkeeper Hope Solo to the back of the net.
After a series of early goals from team USA, Japan answers. Yuki Ogimi, a striker, found the back of the net in the 30th minute.
Japan's goal ends the no-score streak for USA's defense, which sat at a record-breaking 540 minutes.
On the heels of Holiday's goal, Lloyd achieves a hat trick when she nets her third goal, USA's fourth in the match.
Lloyd also set a record for most goals scored in a Women's World Cup final match in the process.
If the USA wins this game, it will also set a record for the most consecutive wins in a Women's World Cup at seven.