- DTEA stands for Diana Tea Co., Ltd. (India)
- DTEA stands for Deutsche Telekom Ag-Spon Adr (German telecommunications company)
- DTEA stands for Département de Transcription et d’Edition Adaptée (French: Department of Transcribing and Adapted Editing)
- DTEA stands for Delhi Tamil Education Association
- DTEA stands for Developmental Training Effectiveness Analysis
DTEA