Knockboy

{{short description|Mountain on Cork–Kerry border, Ireland}}

{{morefootnotes|date=June 2021}}

{{Use dmy dates|date=May 2021}}

{{Use Irish English|date=May 2021}}

{{Infobox mountain

| name = Knockboy

| other_name = An Cnoc Buí

| photo = An Cnoc Bui - Knockboy - geograph.org.uk - 245000.jpg

| photo_caption =

| elevation_m = 706

| elevation_ref =

| prominence_m = 685

| prominence_ref =

| isolation = {{convert|11|mi|km}}

| listing = County top (Cork), P600, Marilyn, Hewitt

| translation = Yellow Mountain

| language = Irish

| location = Cork / Kerry, Ireland

| range = Shehy_Mountains

| map = island of Ireland

| map_relief = yes

| map_caption = Location in Ireland

| coordinates = {{coord|51.802|N|9.442|W|type:mountain_region:IE|display=inline,title}}

| grid_ref_Ireland = W005620

| topo = OSi Discovery 85

}}

Knockboy (An Cnoc Buí in Irish, meaning Yellow Mountain) is a 706-metre-high mountain on the border between counties Cork and Kerry in Ireland.