Kościelnik

{{Infobox settlement

| name = Kościelnik

| settlement_type = Village

| image_skyline = Kościół ewangelicki, ob.rzymsko-katolicki p.w. Jana Chrzciciela w Kościelniku.JPG

| image_caption = Church of Saint John the Baptist

| image_flag =

| image_shield =

| image_map =

| subdivision_type = Country

| subdivision_name = {{POL}}

| subdivision_type1 = Voivodeship

| subdivision_name1 = Lower Silesian

| subdivision_type2 = County

| subdivision_name2 = Lubań

| subdivision_type3 = Gmina

| subdivision_name3 = Lubań

| pushpin_map = Poland

| coordinates = {{coord|51|5|N|15|17|E|region:PL|display=title,inline}}

| elevation_m =

| population_total =

| website =

}}

Kościelnik {{IPAc-pl|k|o|ś|'|ć|e1|l|n|i|k}} ({{langx|de|Holzkirch}}) is a village in the administrative district of Gmina Lubań, within Lubań County, Lower Silesian Voivodeship, in south-western Poland.{{TERYT}} It lies approximately {{convert|4|km|mi|0|abbr=on}} south of Lubań and {{convert|123|km|mi|0|abbr=on}} west of the regional capital Wrocław.