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| Name of Subsidiary | | Jurisdiction of Organization |
| Appian Europe Ltd. | | England and Wales |
| Appian Software International GmbH | | Switzerland (Zug Canton) |
| Appian Netherlands BV | | Netherlands |
| Appian Software Australia Pty. Ltd | | Australia |
| Appian France SARL | | France |
| Appian Software Italy S.R.L. | | Italy |
| Appian Software Germany GmbH | | Germany |
| Appian Singapore Pte. Ltd. | | Singapore |
| Appian Spain SL | | Spain |
| Appian Sweden AB | | Sweden |
| Appian Japan GK | | Japan |
| Appian Canada Corporation | | Canada |
| Appian Mexico Software SRL de C.V. | | Mexico |
| Appian Computer Technologies India Private Ltd | | India |
| Appian Portugal Unipessoal LDA | | Portugal |