Wayside Celtic Football Club was formed in 1948 by a group of men from the Kilternan area of
County Dublin. The club initially played in Stepaside before moving to Golden Ball, Kilternan. They entered the
Athletic Union League (AUL), winning Division 3 South in 1953, before entering a team in the
Wicklow League, which they won in 1959. By this time, they were playing in the
Senior Division, the top division of the
Leinster Senior League, and finished third in the 1991–92 season. During the same season, Wayside qualified for the FAI Cup a second time and won their first match in the 1991–92 competition, beating
Waterford United 1–0 away. Wayside held Monaghan United to a draw in the second round before losing the replay. Wayside also won their first trophy at national level when they secured the 1995–96 FAI Intermediate Cup with victory over
Fanad United. Wayside won their first Senior Division title in the Leinster Senior League in 1997–98. They qualified for the FAI Cup again in 2005. Wayside beat
Monaghan United 1–0 in the fourth round of the
2008 FAI Cup to secure their place in the quarterfinals for the first time since 1996. Drawn at home, Wayside opted to play their quarterfinal tie at the
Carlisle Grounds in Bray. They lost to eventual winners
Bohemians. After qualifying for the
2010 FAI Cup, Wayside became the first side to claim the Noel Ryan Cup in May 2010, when they beat fellow Leinster Senior League side
Crumlin United 1–0 at Richmond Park. They retained the cup in 2011 and won their fifth Leinster Senior League title the same year. ==Club identity==