| Amino acid name (single letter) | http://edamontology.org/data_2563 | Amino acid name (single letter) | |
| Amino acid name (three letter) | http://edamontology.org/data_2564 | Amino acid name (three letter) | |
| Amino acid pair-wise contact potentials | http://edamontology.org/data_1503 | Amino acid pair-wise contact potentials | |
| Amino acid property | http://edamontology.org/data_2016 | Amino acid property | |
| Amino acids | http://edamontology.org/topic_0154 | Small molecules | |
| Amino acid substitution matrix | http://edamontology.org/data_1449 | Comparison matrix (amino acid) | |
| Amino acid substitution matrix (floats) | http://edamontology.org/data_1453 | Amino acid comparison matrix (floats) | |
| Amino acid substitution matrix (integers) | http://edamontology.org/data_1452 | Amino acid comparison matrix (integers) | |
| Amino acid word frequencies table | http://edamontology.org/data_1268 | Amino acid word frequencies table | |
| Amplicon sequencing | http://edamontology.org/topic_3168 | Sequencing | |
| Anaesthesiology | http://edamontology.org/topic_3402 | Anaesthesiology | |
| Anaesthetics | http://edamontology.org/topic_3402 | Anaesthesiology | |
| Analysis | http://edamontology.org/operation_2945 | Analysis | |
| Analytical chemistry | http://edamontology.org/topic_3370 | Analytical chemistry | |
| Anatomy | http://edamontology.org/topic_3067 | Anatomy | |
| Ancestral reconstruction | http://edamontology.org/operation_3745 | Ancestral reconstruction | |
| Ancient DNA | http://edamontology.org/topic_0654 | DNA | |
| ANDI-MS | http://edamontology.org/format_3650 | netCDF | |
| Andrology | http://edamontology.org/topic_3420 | Reproductive health | |
| Animal | http://edamontology.org/topic_3500 | Animals | |
| Animal biology | http://edamontology.org/topic_3500 | Animals | |
| Animals | http://edamontology.org/topic_3500 | Animals | |
| Animal study | http://edamontology.org/topic_3679 | Animal study | |
| Annotated URI | http://edamontology.org/data_1883 | Annotated URI | |
| Annotation | http://edamontology.org/data_2018 | Annotation | |
| Annotation | http://edamontology.org/operation_0226 | Annotation | |
| Annotation processing | http://edamontology.org/operation_2407 | Annotation processing | |
| Annotation retrieval | http://edamontology.org/operation_1774 | Annotation retrieval | |
| Annotation retrieval (sequence) | http://edamontology.org/operation_0229 | Annotation retrieval (sequence) | |
| Annotation track | http://edamontology.org/data_3002 | Annotation track | |