ChS4

{{redirect|CHS4|the aerodrome in Canada|Scugog/Charlies Landing Water Aerodrome}}

{{One source|date=August 2020}}

{{Infobox locomotive

| name = ChS4 [http://scado.narod.ru/th/th_e_chs4.htm Technical details on scado.narod.ru]

| powertype = Electric

| image = Locomotive ChS4-072 2011 G1.jpg

| caption = ChS4

| builder = Škoda Works

| builddate = 1963-1972

| totalproduction = 232

| gauge = {{track gauge|1524mm|lk=on}}
{{track gauge|1520mm|allk=on}}

| wheeldiameter = {{convert|1250|mm|ftin|abbr=on}}

| length = {{convert|19.980|m|ftin|abbr=on}}

| height = {{convert|5,240|m|ftin|abbr=on}}

| axleload = {{convert|20.5|t|abbr=on}}

| locoweight = {{convert|123|t|abbr=on}}

| electricsystem = {{25 kV 50 Hz}} Catenary

| collectionmethod = Pantograph

| maxspeed = {{convert|160|km/h|abbr=on}}

| poweroutput = {{convert|5100|kW|hp|abbr=on}}

| operator = РЖД (RZhD), БЧ (BCh), УЗ (UZ)

| locale = {{flagicon|RUS}} Russia
{{flagicon|SUN}} Soviet Union
{{flagicon|BLR}} Belarus
{{flagicon|UKR}} Ukraine

}}

The ChS4 ({{langx|cs|ČS4}}, {{langx|ru|ЧС4}}) is an electric mainline AC passenger locomotive used in Russia, Belarus, and Ukraine.