Robert Cailliau designed a logo for the WWW back in the day:
From a CERN 2009 newsletter (20th anniversary of TBL’s 1989 proposal):
And from the start the idea was that it should be universal.
Tim even made t-shirts with slogan
Let’s share what we know
for the group working on the project.
Dan Brikley as combined the graphic and the logo, available in various