Byälven

{{Short description|River in Sweden}}

{{Infobox river

| name = Byälven

| native_name =

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| image = Byalven in Saffle.JPG

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| map =

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| subdivision_type1 = Country

| subdivision_name1 = Sweden

| subdivision_type2 =

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| subdivision_type3 = County

| subdivision_name3 = Värmland County

| subdivision_type4 =

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| length_km = 190

| width_min =

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| discharge1_location=

| discharge1_min =

| discharge1_avg = {{convert|58|m3/s|cuft/s|abbr=on}}

| discharge1_max =

| source1 = Glafsfjorden

| source1_location =

| source1_coordinates=

| source1_elevation =

| mouth = Vänern

| mouth_location =

| mouth_coordinates = {{coord|59|06|N|12|54|E|display=inline,title}}

| mouth_elevation =

| progression =

| river_system =

| basin_size_km2 = 4760|basin_size_ref={{cite encyclopedia | title=Byälven | encyclopedia=Nationalencyklopedin | url=http://www.ne.se/byälven | language=Swedish | accessdate=16 July 2010}} {{Subscription required}}

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}}

Byälven is a river in Varmland County, Sweden. It flows from {{ill|Glafsfjorden|sv|lt=Lake Glafsfjorden}} to Lake Vänern, and is some {{convert|40|km|abbr=on}} in length.