There have been seven primary BC Lions logos, along with a bunch of alternates and special logs as well. For the poll, I'll use the primary logos:
1954 - 1966

1967 - 1977

1978 - 1989

1990 - 2004

2005 - 2010

2011 - 2015

2016 - Present

It looks like the last five logos have the similar shape and only had colouring and shading differences.
For discussion, you can discuss the various alternate logos, mostly in the form of the paw logo:




And there were also some special logos for the anniversary or Grey Cup wins:
50 years

60 years

2006 Grey Cup win

2011 Grey Cup win
