Grey-breasted spiderhunter

{{Short description|Species of bird}}

{{Speciesbox

| image = Arachnothera modesta, Grey-breasted spiderhunter - Khao Sok National Park (21324789981).jpg

| image_caption=

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=BirdLife International |date=2016 |title=Arachnothera modesta |volume=2016 |page=e.T103792501A104296539 |doi=10.2305/IUCN.UK.2016-3.RLTS.T103792501A104296539.en |access-date=16 November 2021}}

| genus = Arachnothera

| species = modesta

| authority = (Eyton, 1839)

| synonyms =

}}

The grey-breasted spiderhunter (Arachnothera modesta) is a species of bird in the family Nectariniidae.

It is found in Brunei, Indonesia, Malaysia, Myanmar, Singapore, Thailand, and Vietnam.

Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest. It is sometimes considered conspecific with the streaky-breasted spiderhunter.