Fields Overview

Schema reference for Fields entities

Fields are the second level of the OpenAlex topic hierarchy. There are 26 fields spread across 4 domains. Each field contains multiple subfields.

The topic hierarchy is: Domain → Field → Subfield → Topic

All 26 fields

ID	Name	Domain
11	Agricultural and Biological Sciences	Life Sciences
12	Arts and Humanities	Social Sciences
13	Biochemistry, Genetics and Molecular Biology	Life Sciences
14	Business, Management and Accounting	Social Sciences
15	Chemical Engineering	Physical Sciences
16	Chemistry	Physical Sciences
17	Computer Science	Physical Sciences
18	Decision Sciences	Social Sciences
19	Earth and Planetary Sciences	Physical Sciences
20	Economics, Econometrics and Finance	Social Sciences
21	Energy	Physical Sciences
22	Engineering	Physical Sciences
23	Environmental Science	Physical Sciences
24	Immunology and Microbiology	Life Sciences
25	Materials Science	Physical Sciences
26	Mathematics	Physical Sciences
27	Medicine	Health Sciences
28	Neuroscience	Life Sciences
29	Nursing	Health Sciences
30	Pharmacology, Toxicology and Pharmaceutics	Life Sciences
31	Physics and Astronomy	Physical Sciences
32	Psychology	Social Sciences
33	Social Sciences	Social Sciences
34	Veterinary	Health Sciences
35	Dentistry	Health Sciences
36	Health Professions	Health Sciences

Filter, sort, and group_by fields

The API supports filtering, sorting, and grouping on fields fields. See Filtering, Sorting, and Grouping for syntax.

Fields marked (deprecated) are .search filters — use the search parameter instead.

Field	Sort	Group_by	Filter
cited_by_count	✓	✓	✓
default.search (deprecated)			✓
display_name	✓		✓
display_name.search (deprecated)			✓
domain.id	✓	✓	✓
from_created_date	✓		✓
id	✓	✓	✓
subfields.id	✓	✓	✓
works_count	✓	✓	✓