On 12 July 2015, Giovinco achieved Toronto FC's first ever hat-trick in MLS play against New York City FC in a 4–4 draw at Yankee Stadium, and set up the fourth goal during the match, also missing a penalty. It was also the third fastest hat trick scored in the league's history at 9 minutes. Following the match, he received the player of the week award for the third time in the 2015 MLS season. After scoring and assisting in a 2–1 home win over Philadelphia Union on 18 July 2015, Giovinco was one of the 22 players to be named to the 2015 MLS All-Star Game roster, although he was later ruled out of the match due to injury, and replaced by his teammate Altidore. On 5 August 2015, Giovinco scored a hat-trick in a 4–1 home win over Orlando City to bring him to the top of the MLS scoring tables with 16 goals, also breaking the club's single-season record of 15 goals set in 2010 by Dwayne De Rosario in the process. On 6 August 2015, he was named the Etihad Airways MLS Player of the Month for July 2015. On 14 August 2015, Giovinco's free kick goal against Orlando City was awarded the MLS Goal of the Week Award. On 29 August 2015, he was substituted in the 51st minute in a 2–1 win over Montreal Impact due to an adductor strain; although it was reported that the injury was not serious, he was ruled out indefinitely. On 3 September 2015, he was named the MLS Player of the Month for August, winning the award for a second consecutive time. He returned to the starting line-up in a 3–1 home defeat to the New England Revolution ten days later.