Hanna-Barbera

1957–1958


The first logo of Hanna-Barbera

1958–1959


The boxes changed in 1958. This was just a later version of the 1957 logo.

1967–1968
In 1967, since Taft now owned Hanna-Barbera, a byline was added and the color changed.

1968–1974
In 1968, the 1966 and 1967 motion designs was dropped and replaced. The logo, nicknamed "Zooming HB", would appear by it zooming in

1974–1979


The logo was changed in 1974 to get more smoother animation. It was nicknamed "The Rainbow HB".

1979–1986




The Swirling Star was introduced in 1979.

1986–1992, 1998–2002
In 1986, the swirling star became CGI.

1988–2002
In 1988, a new script logo was made.

1990–1991
Turner Entertainment would buy over Hanna-Barbera Productions sometime in 1991.

1993–1994
During this brief time period, Hanna-Barbera Productions adapted the name H-B Production Co.

1993–1994
Following Turner's purchase of Hanna-Barbera in 1991, sometimes these closing variants of these logos appear with the then-current Turner Entertainment Co. logo.

Following the previous season, the company revised its original name as Hanna-Barbera Cartoons, Inc. 

1994–present


An oval or a rectangle views some Hanna Barbera characters and stops at Fred or Jonny Quest. This is the Hanna Barbera logo The Flintstones is currently using. Following Turner's purchase of Hanna-Barbera in 1991, sometimes these closing variants of these logos appear with the then-current Turner Entertainment Co. logo.

1995-1996; 1997–2002
When Time Warner bought over Turner Entertainment (which owned Hanna-Barbera since 1991) in 1996, the byline for Hanna-Barbera Cartoons was changed from  'A Turner Company'  to  'A Time Warner Company' . Some variants appear with the then-current Cartoon Network logo.

2002–present


Hanna-Barbera was absorbed into Warner Bros., though a new script logo (based on the 1961 logo) is being used to promote H-B shows and characters.

In-Credit Disclaimers
All of these are followed by one of the above logos unless otherwise noted.