Matthew Luke Slattery^[1][2] (Chinese: 馬斐; pinyin: Mǎ fěi; born 5 April 2005) is a Hong Kong professional footballer of partial English descent who plays as a striker for Hong Kong Premier League club Kitchee.

Slattery was promoted to the senior squad of Kitchee ahead of the 2023–24 season following good performances in the Under-18's Youth Premier League.^[3] He was also rewarded with his first professional contract with the club and would don the number 96 on his debut season.^[4][5][6] He made his first unofficial senior appearance as a substitute during the pre-season friendly against Chainat Hornbill with him expressing his will to continue to go on the grind and continue to improve following his lacklustre performance.^[7]

Slattery would also be included in the travelling squad for the 2023–24 AFC Champions League campaign, marking his first professional away outing.^[8] Slattery would then make his senior debut in the 6-2 thrashing of RCFC in the Sapling Cup as a substitute.^[9][10] Slattery was selected for the 2024 Guangdong–Hong Kong Cup final squad following a good showing in the preliminary training. ^[11][12]

Slattery made his Hong Kong U-20 debut against Thailand in a friendly where he impressed for a good 90 minutes playing as a striker. He was then called up for the Hong Kong U-23 where he scored a goal against Tajikistan U-23 and stole a draw from the opponents late in the game.^[13]

Slattery participated in the 2023 East Asian Youth Games in Ulaanbaatar where he managed to fend off Mongolia as he scored another late goal to secure the win for Hong Kong.^[14] However the team fell to a 8-0 thrashing from Chinese Taipei and returned home with a silver medal.^[15]

Matthew is an alumni at La Salle College and was part of the school's athletics and football team.^[16][17] Matthew's girlfriend is current Kitchee SC player Letti Tsang.