Extension Types for Spatial Data for Use with 'Arrow' R package geoarrow version 0.4.3 Provides extension types and conversions to between R-native object types and 'Arrow' columnar types. This includes integration among the 'arrow', 'nanoarrow', 'sf', and 'wk' packages such that spatial metadata is preserved wherever possible. Extension type implementations ensure first-class geometry data type support in the 'arrow' and 'nanoarrow' packages. Software Depends: R (>= 3.6.0) Imports: nanoarrow (>= 0.5.0), wk (>= 0.9.0) LinkingTo: wk Suggests: arrow, R6, sf, testthat (>= 3.0.0) Dewey Dunnington <dewey@dunnington.ca> Comprehensive R Archive Network (CRAN) Dewey Dunnington [aut, cre] (ORCID: <https://orcid.org/0000-0002-9415-4582>), Anthony North [ctb], Apache Software Foundation [cph], Ulf Adams [cph], Daniel Lemire [cph], Joao Paulo Magalhaes [cph] Apache License (>= 2) 2026-06-04 application/tgz https://CRAN.R-project.org/package=geoarrow doi:10.32614/CRAN.package.geoarrow