Sumkar District

{{Infobox settlement

| name = Sumkar District

| other_name =

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| map_caption =

| pushpin_map = Papua New Guinea

| pushpin_relief =

| coordinates = {{coord|4.652|S|145.977|E|type:adm3rd_source:itwiki|display=inline}}

| pushpin_label_position = right

| pushpin_map_alt =

| pushpin_map_caption = Location within Papua New Guinea

| subdivision_type = Country

| subdivision_name = Papua New Guinea

| subdivision_type1 = Province

| subdivision_name1 = Madang Province

| seat_type = Capital

| seat = Karkar Island

| area_total_km2 = 2001

| area_footnotes =

| population_total = 84944

| population_as_of = 2011 census

| population_rank =

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| population_density_km2 = auto

| demographics_type1 =

| demographics1_title1 = Main languages

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| timezone1 = AEST

| utc_offset1 = +10

| website =

}}

Sumkar District is a district in the north of Madang Province in Papua New Guinea. It is one of the six administrative districts that make up the province. Sumkar is a district which is made up of Karkar Island and part of mainland NCR.