diff --git a/compiler/testData/codegen/box/annotations/genericAnnotations.kt b/compiler/testData/codegen/box/annotations/genericAnnotations.kt
index debdc72ec92..e00f51eb829 100644
--- a/compiler/testData/codegen/box/annotations/genericAnnotations.kt
+++ b/compiler/testData/codegen/box/annotations/genericAnnotations.kt
@@ -1,4 +1,5 @@
 // IGNORE_LEAKED_INTERNAL_TYPES: KT-54517
+// IGNORE_BACKEND_K2: JS_IR
 // MODULE: lib
 // FILE: l1.kt
 package ann
diff --git a/compiler/testData/codegen/box/arrays/arrayInstanceOf.kt b/compiler/testData/codegen/box/arrays/arrayInstanceOf.kt
index 406b97e57a4..c08931ce10a 100644
--- a/compiler/testData/codegen/box/arrays/arrayInstanceOf.kt
+++ b/compiler/testData/codegen/box/arrays/arrayInstanceOf.kt
@@ -1,3 +1,5 @@
+// IGNORE_BACKEND_K2: JS_IR
+
 //test [], get and iterator calls
 fun test(createIntNotLong: Boolean): String {
     val a = if (createIntNotLong) IntArray(5) else LongArray(5)
diff --git a/compiler/testData/codegen/box/arrays/kt7288.kt b/compiler/testData/codegen/box/arrays/kt7288.kt
index 2c387e56cf9..abcd388dd11 100644
--- a/compiler/testData/codegen/box/arrays/kt7288.kt
+++ b/compiler/testData/codegen/box/arrays/kt7288.kt
@@ -1,3 +1,5 @@
+// IGNORE_BACKEND_K2: JS_IR
+
 fun test(b: Boolean): String {
     val a = if (b) IntArray(5) else LongArray(5)
     if (a is IntArray) {
diff --git a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInPrimaryConstructorDefaultParameter.kt b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInPrimaryConstructorDefaultParameter.kt
index 0a7a3ac76db..173bee27717 100644
--- a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInPrimaryConstructorDefaultParameter.kt
+++ b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInPrimaryConstructorDefaultParameter.kt
@@ -1,4 +1,5 @@
 // IGNORE_BACKEND: JS_IR_ES6
+// IGNORE_BACKEND_K2: JS_IR
 
 class Outer(val x: Any) {
     inner class Inner(
diff --git a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInSecondaryConstructorDefaultParameter.kt b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInSecondaryConstructorDefaultParameter.kt
index 6bee4f40f1a..2e1cb1279d7 100644
--- a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInSecondaryConstructorDefaultParameter.kt
+++ b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/outerCapturedInSecondaryConstructorDefaultParameter.kt
@@ -1,4 +1,5 @@
 // IGNORE_BACKEND: JS_IR_ES6
+// IGNORE_BACKEND_K2: JS_IR
 
 class Outer(val x: Any) {
     inner class Inner(
diff --git a/compiler/testData/codegen/box/constants/constValFromAnotherModuleInConsVal.kt b/compiler/testData/codegen/box/constants/constValFromAnotherModuleInConsVal.kt
index 7f3bcaaf64e..3f35afcf783 100644
--- a/compiler/testData/codegen/box/constants/constValFromAnotherModuleInConsVal.kt
+++ b/compiler/testData/codegen/box/constants/constValFromAnotherModuleInConsVal.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // MODULE: lib
 // FILE: Typography.kt
 object Typography {
diff --git a/compiler/testData/codegen/box/constants/float.kt b/compiler/testData/codegen/box/constants/float.kt
index 830333f86f3..c25ff2c2a51 100644
--- a/compiler/testData/codegen/box/constants/float.kt
+++ b/compiler/testData/codegen/box/constants/float.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // WITH_STDLIB
 
 import kotlin.math.*
diff --git a/compiler/testData/codegen/box/constants/foldingBinaryOpsUnsignedConst.kt b/compiler/testData/codegen/box/constants/foldingBinaryOpsUnsignedConst.kt
index 5070a7cd894..599b9dd423f 100644
--- a/compiler/testData/codegen/box/constants/foldingBinaryOpsUnsignedConst.kt
+++ b/compiler/testData/codegen/box/constants/foldingBinaryOpsUnsignedConst.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // WITH_STDLIB
 
 const val a = "INT " + 0x8fffffffU
diff --git a/compiler/testData/codegen/box/delegation/withDefaultsMultipleFilesOrder.kt b/compiler/testData/codegen/box/delegation/withDefaultsMultipleFilesOrder.kt
index 74834745753..7711ad2cd7b 100644
--- a/compiler/testData/codegen/box/delegation/withDefaultsMultipleFilesOrder.kt
+++ b/compiler/testData/codegen/box/delegation/withDefaultsMultipleFilesOrder.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // FILE: lib.kt
 interface ResolutionScope {
     fun getContributedDescriptors(s: String = "OK"): String
diff --git a/compiler/testData/codegen/box/enum/defaultCtor/noPrimaryConstructor.kt b/compiler/testData/codegen/box/enum/defaultCtor/noPrimaryConstructor.kt
index cd17a57dd7a..02b9769d028 100644
--- a/compiler/testData/codegen/box/enum/defaultCtor/noPrimaryConstructor.kt
+++ b/compiler/testData/codegen/box/enum/defaultCtor/noPrimaryConstructor.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 
 enum class Test {
     A(0),
diff --git a/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithDefaultArguments.kt b/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithDefaultArguments.kt
index fb08b98daab..4c6185b8545 100644
--- a/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithDefaultArguments.kt
+++ b/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithDefaultArguments.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 enum class Test(val x: Int, val str: String) {
     OK;
     constructor(x: Int = 0) : this(x, "OK")
diff --git a/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithVararg.kt b/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithVararg.kt
index 15c5ad34e9c..282a59f6282 100644
--- a/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithVararg.kt
+++ b/compiler/testData/codegen/box/enum/defaultCtor/secondaryConstructorWithVararg.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 enum class Test(val x: Int, val str: String) {
     OK;
     constructor(vararg xs: Int) : this(xs.size + 42, "OK")
diff --git a/compiler/testData/codegen/box/enum/emptyConstructor.kt b/compiler/testData/codegen/box/enum/emptyConstructor.kt
index c82a4ac41c3..3c0089fcb5d 100644
--- a/compiler/testData/codegen/box/enum/emptyConstructor.kt
+++ b/compiler/testData/codegen/box/enum/emptyConstructor.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 package test
 
 enum class My(val s: String) {
diff --git a/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgument.kt b/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgument.kt
index 9f94a9a50fc..eed82a0cf77 100644
--- a/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgument.kt
+++ b/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgument.kt
@@ -1,6 +1,7 @@
 // WITH_STDLIB
 // IGNORE_LIGHT_ANALYSIS
 // IGNORE_BACKEND: JVM
+// IGNORE_BACKEND_K2: JS_IR
 // LANGUAGE: +InlineClassImplementationByDelegation
 
 interface I {
diff --git a/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgumentGeneric.kt b/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgumentGeneric.kt
index eb3ad3810ef..677970340e5 100644
--- a/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgumentGeneric.kt
+++ b/compiler/testData/codegen/box/inlineClasses/delegationByUnderlyingType/defaultArgumentGeneric.kt
@@ -1,6 +1,7 @@
 // WITH_STDLIB
 // IGNORE_LIGHT_ANALYSIS
 // IGNORE_BACKEND: JVM
+// IGNORE_BACKEND_K2: JS_IR
 // LANGUAGE: +InlineClassImplementationByDelegation, +GenericInlineClassParameter
 
 interface I {
diff --git a/compiler/testData/codegen/box/innerNested/considerPropertyInitValueFromNestedClass.kt b/compiler/testData/codegen/box/innerNested/considerPropertyInitValueFromNestedClass.kt
index bab4e25a77d..cabf1da721e 100644
--- a/compiler/testData/codegen/box/innerNested/considerPropertyInitValueFromNestedClass.kt
+++ b/compiler/testData/codegen/box/innerNested/considerPropertyInitValueFromNestedClass.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // ISSUE: KT-52057
 // MODULE: lib
 // FILE: Class.kt
diff --git a/compiler/testData/codegen/box/innerNested/innerWithDefaultInner.kt b/compiler/testData/codegen/box/innerNested/innerWithDefaultInner.kt
index 733e0efbee8..8d44a4b265e 100644
--- a/compiler/testData/codegen/box/innerNested/innerWithDefaultInner.kt
+++ b/compiler/testData/codegen/box/innerNested/innerWithDefaultInner.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 
 // KT-40686
 
diff --git a/compiler/testData/codegen/box/intrinsics/tostring.kt b/compiler/testData/codegen/box/intrinsics/tostring.kt
index 27f9f1a11a0..5d9e6efa129 100644
--- a/compiler/testData/codegen/box/intrinsics/tostring.kt
+++ b/compiler/testData/codegen/box/intrinsics/tostring.kt
@@ -1,5 +1,6 @@
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS
+// IGNORE_BACKEND_K2: JS_IR
 
 fun box(): String {
     if (239.toByte().toString() != (239.toByte() as Byte?).toString()) return "byte failed"
diff --git a/compiler/testData/codegen/box/ir/enumClass2.kt b/compiler/testData/codegen/box/ir/enumClass2.kt
index 122d9bb9477..7ad830bb4e0 100644
--- a/compiler/testData/codegen/box/ir/enumClass2.kt
+++ b/compiler/testData/codegen/box/ir/enumClass2.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // WITH_STDLIB
 import kotlin.test.assertEquals
 
diff --git a/compiler/testData/codegen/box/properties/const/intermoduleInlineConst.kt b/compiler/testData/codegen/box/properties/const/intermoduleInlineConst.kt
index 5bb6575209b..33595d02017 100644
--- a/compiler/testData/codegen/box/properties/const/intermoduleInlineConst.kt
+++ b/compiler/testData/codegen/box/properties/const/intermoduleInlineConst.kt
@@ -1,3 +1,5 @@
+// IGNORE_BACKEND_K2: JS_IR
+
 // MODULE: lib1
 // FILE: lib1.kt
 object L1 {
diff --git a/compiler/testData/codegen/box/secondaryConstructors/enums.kt b/compiler/testData/codegen/box/secondaryConstructors/enums.kt
index 9fd17a5058e..9b2fbb253ed 100644
--- a/compiler/testData/codegen/box/secondaryConstructors/enums.kt
+++ b/compiler/testData/codegen/box/secondaryConstructors/enums.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 
 enum class A1(val prop1: String) {
     X("asd"),
diff --git a/compiler/testData/codegen/box/when/enumOptimization/kt14802.kt b/compiler/testData/codegen/box/when/enumOptimization/kt14802.kt
index aeae43bf5c9..5818daa933a 100644
--- a/compiler/testData/codegen/box/when/enumOptimization/kt14802.kt
+++ b/compiler/testData/codegen/box/when/enumOptimization/kt14802.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // CHECK_CASES_COUNT: function=crash count=2 TARGET_BACKENDS=JS
 // CHECK_CASES_COUNT: function=crash count=0 IGNORED_BACKENDS=JS
 // CHECK_IF_COUNT: function=crash count=1 TARGET_BACKENDS=JS
diff --git a/compiler/testData/codegen/box/when/enumOptimization/kt15806.kt b/compiler/testData/codegen/box/when/enumOptimization/kt15806.kt
index 0d9c08d158b..cde1795146d 100644
--- a/compiler/testData/codegen/box/when/enumOptimization/kt15806.kt
+++ b/compiler/testData/codegen/box/when/enumOptimization/kt15806.kt
@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_K2: JS_IR
 // CHECK_CASES_COUNT: function=doTheThing count=2 TARGET_BACKENDS=JS
 // CHECK_CASES_COUNT: function=doTheThing count=0 IGNORED_BACKENDS=JS
 // CHECK_IF_COUNT: function=doTheThing count=2 TARGET_BACKENDS=JS