1995 (pre-release)[]
Prototype logo #1 (used in Season 1 concept art and storyboards) 
Prototype logo #2 (used in in the pilot episode "The Big Sister", as well as in Season 3 concept art)
1995–2003[]
1995 (pilot)[]
Title-card used in the first pilot episode "Changes"
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Title-card with prototype logo used in the second pilot episode "The Big Sister"
1996–2003[]
Print version 
Show logo with the network logo as the tagline
Seen on covers for Dexter's Laboratory VHS tapes
Logo seen in the opening and Ego Trip.
Logo seen on a poster
Seen in a name spelling promo.
Logo seen in various 1997 bumpers.
Logo used in South Korea
"Mandark's Laboratory" logo
Mandark's Laboratory alternative logo.
Title-cards[]
Title card (Season 2-4, A)
Title card (Season 2-4, B)
Version of the logo used in the opening of Dexter's Laboratory: Mandark's Lab
"Mandark's Laboratory" title card was used for the episode "Babe Sitter".
Title card seen in the short “Chicken Scratch”.
Title-card used in the episode "2Genuises 2Gether 4Ever"
1996–1997[]
Title card (Season 1).
Title card (Season 1) animation.