The club first competed in a European competition in 1963–64, qualifying for the Inter-Cities Fairs Cup following a third-place finish in the Scottish First Division.
Partick Thistle's début in European football came in 1963–64 when they qualified for the Inter-Cities Fairs Cup after finishing third in the Scottish First Division behind Rangers and Kilmarnock respectively.
[1] However, on the away leg Spartak Brno produced a convincing 4–0 victory to knock out Partick Thistle 6–3 on aggregate.
Thistle then faced French club Metz away from home which resulted in a narrow 1–0 defeat.
Metz progressed to the knock-out stages after finishing top of the group with maximum points having won all their matches.