The Terriers are not known to be connected with the Couchiching Terriers of the Ontario Provincial Junior A Hockey League, although the junior club was known as the Orillia Terriers from 1989 to 1997.
The Terriers won the OHA Senior A playoff title in 1970 and 1973 and also won the Allan Cup as Canadian Senior A champions in the latter year, defeating the visiting St. Boniface Mohawks of Manitoba 4-1 in a best-of-seven final playdown series. They had lost the 1970 national final to the Spokane Jets.
The 1972-73 edition of the club featured a number of veterans like Mike Draper, Gary Milroy and Grant Moore, all of whom had been in place since the first season, 1968-69. Also on the team were: Claire Alexander, who later played for the Toronto Maple Leafs; Jim Keon, brother of then-Leaf captain Dave Keon; Blake Ball, who played Gilmore Tuttle in the 1977 film "Slap Shot"; and goalie Louis Levasseur, who went on to all-star status in the World Hockey Association.
Orillia dropped down to Intermediate A in 1979 and left that league in 1982.
|1966-67||40||12||26||2||157||207||26||8th OHA Sr. A|
|1967-68||40||11||29||0||146||211||22||10th OHA Sr. A|
|1968-69||39||23||15||1||184||144||47||3rd OHA Sr. A|
|1969-70||40||31||7||2||201||109||64||OHA Sr. A||Won League|
|1970-71||39||27||12||0||232||141||54||OHA Sr. A||Lost Final|
|1971-72||40||26||13||1||222||150||53||3rd OHA Sr. A|
|1972-73||44||31||13||0||214||132||62||2nd OHA Sr. A||Won League, Won Allan Cup|
|1973-74||40||29||11||0||203||126||58||2nd OHA Sr. A||Lost Final|
|1974-75||40||18||22||0||189||200||36||4th OHA Sr. A|
|1975-76||44||13||30||1||161||255||27||6th OHA Sr. A|
|1976-77||34||14||19||1||168||164||29||6th OHA Sr. A|
|1977-78||40||16||22||2||184||191||34||6th OHA Sr. A|
|1978-79||40||14||25||1||202||241||29||5th OHA Sr. A|
|1980-81||36||20||16||0||203||186||40||4th OHA Int. A|
|1981-82||36||12||22||2||161||230||26||4th OHA Int. A|