This was the (very first ?) logo.
Stylized word "Ada" and a globe with an arrow around it.
Letter 'A' is a mixed one — half in 'Times New Roman' and half in 'Didot' font, sized at 120%
Letter 'd' is in 'Didot' font
Letter 'a' is merely in 'Bodoni 72 Book' font (most similar)
Height/width Ratio deformed

© ?? The Special Interest Group on Ada (ACM’s SIGAda).
Legal: ??
Download original from ACM-SIGAda, From the AJPO (Ada Joint Program Office)

1994-10-18
Logo used in the Ada Promotional Campaign through the Ada Software Alliance.

Approved by AJPO Director Don Reifer and Ada9X Project Director Chris Anderson, was used on all new Ada marketing materials.
It combines the globe symbol used by the AdaIC with the logotype that reads, "Ada, The Language For a Complex World."

© From the PAL Team-Ada directory
Legal: ??
Download copy from Ada-Belgium

• Derivative of the original ACM SigAda «The International Language for Software Engineering»

© Sowebio sarl, designed by Senzo Rouhaud
Legal: CC-BY-SA
Download from AdaForge

• Derivative of the original ACM SigAda «The International Language for Software Engineering»

• Inspired by the re-work of Senzo Rouhaud (Sowebio sarl)
• Initial 3D Design with NASA Blue Marble Map Collection

© William J. Franck
Legal: CC-BY-SA
Download original from AdaForge

2D

It is based on previous similar Ada coin-like pictures from the 2001-2002 Ada-Belgium programming contest.
A previous version of the Silver "Ada coin" picture was used from 2004 on by ACM SIGAda
The latest update adds "2022" on a Gold coin, referring to the upcoming ISO standard for the Ada programming language.

The Ada 2012 and 2022 versions were recreated from scratch by Steven Craeynest in a more common format (PNG) and using the highest resolution version available of the original "Lady Ada" image.

© Steven Craeynest
Legal: sort of CC-NC See Dirk Craeynest - Ada Belgium download page
Download the original from Ada-Belgium page

B&W derivative

Variation made by William Franck, after the "Ada - In Strong Typing We Trust" coin provided by Dirk Craeynest (Ada-Belgium)’, and the SIGAda typo.

© Steven Craeynest
Legal: sort of CC-NC See Dirk Craeynest - Ada Belgium download page
Download original from AdaForge

Small Logo

Variation after the "Ada - In Strong Typing We Trust" coin provided by Dirk Craeynest (Ada-Belgium), and the SIGAda typo.


© William Franck
Legal: CC-BY-SA
Download from AdaForge

• Plain : Ada Letters , Ada 2012 , Ada 2022
• Circle : Ada ISTWT 1983-2022 , Ada 2012 , Ada 2022 , Ada ISTWT 1983-2022 small , Ada ISTWT small
• Coin : Ada ISTWT 1983-2022 , Ada 2012 , Ada 2022 , Ada ISTWT 1983-2022 small , Ada ISTWT small
• Globe : Ada RSfCW

Time-tested, safe and secure

This is a derived work from the the winner of the Ada Mascot contest in Nov 2014 on Reddit.
Visible on Wikipedia , Wikibooks , Wikiversity

Leah Goodreau was inspired by Ada Lovelace's adolescent fascination with flight and Charles Babbage's nickname for her, "Lady Fairy."
The coloration of the mascot references the Asian fairy-bluebird, while the silhouette is a hummingbird because of their famed speed and sleekness.

© Leah Goodreau
Legal: CC-0 = Public Domain
Download original from GetAdaNow

Visible on Reddit Ada Community