Cudgegong River

{{Use dmy dates|date=February 2022}}{{Use Australian English|date=February 2013}}

{{Infobox river

| name = Cudgegong River

| native_name =

| native_name_lang =

| name_other = Mudgee River{{NSW GNR |id=JPYblMWAKW |title=Cudgegong River |date=25 September 1970 |access-date=4 February 2013 }}

| name_etymology =

| image = Cudgegong river mudgee.jpg

| image_size =

| image_caption = Cudgegong River at Mudgee

| map =

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| subdivision_type1 = Country

| subdivision_name1 = Australia

| subdivision_type2 = State

| subdivision_name2 = New South Wales

| subdivision_type3 = Region

| subdivision_name3 = South Eastern Highlands (IBRA), Central West, Orana

| subdivision_type4 =

| subdivision_name4 =

| subdivision_type5 = Municipalities

| subdivision_name5 = Mid-Western, Wellington

| length_km = 250

| width_min =

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| discharge1_location=

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| source1 = Great Dividing Range

| source1_location = near Rylstone in Wollemi National Park

| source1_coordinates=

| source1_elevation = {{convert|766|m|abbr=on}}

| mouth = confluence with the Macquarie River

| mouth_location = Lake Burrendong

| mouth_coordinates =

| mouth_elevation = {{convert|341|m|abbr=on}}

| progression =

| river_system = Macquarie River, Murray–Darling basin

| basin_size =

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| custom_label = Reservoirs

| custom_data = Rylstone Reservoir, Lake Windamere, Lake Burrendong

| extra = {{cite web |url=http://www.bonzle.com/c/a?a=p&cmd=sp&p=210646&st=&s=Cudgegong%20river |title=Map of Cudgegong River |work=Bonzle.com |access-date=4 February 2013 }}

}}

Cudgegong River, a perennial stream that is part of the Macquarie catchment within the Murray–Darling basin, is located in the central western and Orana districts of New South Wales, Australia.

The river rises of the western slopes of the Great Dividing Range within Wollemi National Park, east of Rylstone, and flows generally west, north-west, and south-west, joined by fourteen tributaries, including Wyaldra Creek and Lawsons Creek, before reaching its confluence with the Macquarie River at Lake Burrendong; descending {{convert|425|m}} over its {{convert|250|km|mi|adj=on}} course.

Several reservoirs, including Rylstone Reservoir and Lake Windamere, impede the natural flow of the Cudgegong River past the towns of Mudgee, and near Gulgong.