diff --git a/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala b/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala
index cde3c404ff..d5f1ed6603 100644
--- a/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala
+++ b/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/FormatOps.scala
@@ -439,6 +439,9 @@ class FormatOps(
         }
         term.elsep match {
           case t: Term.If => getElseChain(t, newRes)
+          case b @ Term.Block(List(t: Term.If))
+              if !tokens.areMatching(ftElsep.left)(getLastToken(b)) =>
+            getElseChain(t, newRes)
           case _ => newRes
         }
       case _ => res
@@ -2401,14 +2404,17 @@ class FormatOps(
       ): Option[OptionalBracesRegion] = {
         ft.meta.leftOwner match {
           case t: Term.If =>
+            val nr = nft.right
             t.cond match {
-              case b: Term.Block
-                  if !matchingOpt(nft.right).exists(_.end >= b.pos.end) =>
+              case b: Term.Block if (matchingOpt(nr) match {
+                    case Some(t) => t.end < b.pos.end
+                    case None => isMultiStatBlock(b)
+                  }) =>
                 Some(new OptionalBracesRegion {
                   def owner = Some(t)
                   def splits = Some {
                     val dangle = style.danglingParentheses.ctrlSite
-                    val forceNL = !nft.right.is[T.LeftParen]
+                    val forceNL = !nr.is[T.LeftParen]
                     getSplits(ft, b, forceNL, dangle)
                   }
                   def rightBrace = blockLast(b)
@@ -2429,6 +2435,12 @@ class FormatOps(
             (t.elsep match {
               case _: Term.If => None
               case x if isTreeMultiStatBlock(x) => Some(true)
+              case b @ Term.Block(List(_: Term.If))
+                  if (matchingOpt(nft.right) match {
+                    case Some(t) => t.end < b.pos.end
+                    case None => true
+                  }) =>
+                None
               case _ if isThenPWithOptionalBraces(t) =>
                 Some(shouldBreakInOptionalBraces(nft))
               case _ => None
diff --git a/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/Router.scala b/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/Router.scala
index fe0fc8b839..b2f038596e 100644
--- a/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/Router.scala
+++ b/scalafmt-core/shared/src/main/scala/org/scalafmt/internal/Router.scala
@@ -2173,7 +2173,14 @@ class Router(formatOps: FormatOps) {
           Seq(Split(Newline, 0))
       // Last else branch
       case FormatToken(_: T.KwElse, _, _) if (leftOwner match {
-            case t: Term.If => !t.elsep.is[Term.If]
+            case t: Term.If =>
+              t.elsep match {
+                case _: Term.If => false
+                case b @ Term.Block(List(_: Term.If)) =>
+                  matchingOpt(nextNonComment(formatToken).right)
+                    .exists(_.end >= b.pos.end)
+                case _ => true
+              }
             case x => throw new UnexpectedTree[Term.If](x)
           }) =>
         val body = leftOwner.asInstanceOf[Term.If].elsep
diff --git a/scalafmt-tests/src/test/resources/scala3/OptionalBraces.stat b/scalafmt-tests/src/test/resources/scala3/OptionalBraces.stat
index 44516ecc56..fc48c6db93 100644
--- a/scalafmt-tests/src/test/resources/scala3/OptionalBraces.stat
+++ b/scalafmt-tests/src/test/resources/scala3/OptionalBraces.stat
@@ -876,6 +876,48 @@ object a:
             stat4
          end if
       end cond
+<<< remove optional braces within if-cond
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if {
+     bar &&
+     baz
+  } then
+     foo
+>>>
+private def mtd: Res =
+  if bar &&
+     baz
+  then foo
+<<< remove optional braces within else-if
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then
+      barBody
+    else bazBody
+  }
+>>>
+private def mtd: Res =
+  if foo then fooBody
+  else if bar then barBody
+  else bazBody
+<<< remove optional braces within else-if 2
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then barBody else bazBody
+  }
+>>>
+private def mtd: Res =
+  if foo then fooBody
+  else if bar then barBody
+  else bazBody
 <<< rewrite with given-with
 rewrite.scala3.removeOptionalBraces = oldSyntaxToo
 ===
diff --git a/scalafmt-tests/src/test/resources/scala3/OptionalBraces_fold.stat b/scalafmt-tests/src/test/resources/scala3/OptionalBraces_fold.stat
index 21404d9937..7328b1b9b0 100644
--- a/scalafmt-tests/src/test/resources/scala3/OptionalBraces_fold.stat
+++ b/scalafmt-tests/src/test/resources/scala3/OptionalBraces_fold.stat
@@ -821,6 +821,39 @@ object a:
             stat4
          end if
       end cond
+<<< remove optional braces within if-cond
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if {
+     bar &&
+     baz
+  } then
+     foo
+>>>
+private def mtd: Res = if bar && baz then foo
+<<< remove optional braces within else-if
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then
+      barBody
+    else bazBody
+  }
+>>>
+private def mtd: Res = if foo then fooBody else if bar then barBody else bazBody
+<<< remove optional braces within else-if 2
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then barBody else bazBody
+  }
+>>>
+private def mtd: Res = if foo then fooBody else if bar then barBody else bazBody
 <<< rewrite with given-with
 rewrite.scala3.removeOptionalBraces = oldSyntaxToo
 ===
diff --git a/scalafmt-tests/src/test/resources/scala3/OptionalBraces_keep.stat b/scalafmt-tests/src/test/resources/scala3/OptionalBraces_keep.stat
index 33d44345e5..8d2c6d05f2 100644
--- a/scalafmt-tests/src/test/resources/scala3/OptionalBraces_keep.stat
+++ b/scalafmt-tests/src/test/resources/scala3/OptionalBraces_keep.stat
@@ -875,6 +875,51 @@ object a:
             stat4
          end if
       end cond
+<<< remove optional braces within if-cond
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if {
+     bar &&
+     baz
+  } then
+     foo
+>>>
+private def mtd: Res =
+  if
+     bar &&
+     baz
+  then
+     foo
+<<< remove optional braces within else-if
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then
+      barBody
+    else bazBody
+  }
+>>>
+private def mtd: Res =
+  if foo then fooBody
+  else if bar then
+     barBody
+  else bazBody
+<<< remove optional braces within else-if 2
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then barBody else bazBody
+  }
+>>>
+private def mtd: Res =
+  if foo then fooBody
+  else if bar then barBody
+  else bazBody
 <<< rewrite with given-with
 rewrite.scala3.removeOptionalBraces = oldSyntaxToo
 ===
diff --git a/scalafmt-tests/src/test/resources/scala3/OptionalBraces_unfold.stat b/scalafmt-tests/src/test/resources/scala3/OptionalBraces_unfold.stat
index deec05e20f..9d71b216db 100644
--- a/scalafmt-tests/src/test/resources/scala3/OptionalBraces_unfold.stat
+++ b/scalafmt-tests/src/test/resources/scala3/OptionalBraces_unfold.stat
@@ -919,6 +919,53 @@ object a:
             stat4
          end if
       end cond
+<<< remove optional braces within if-cond
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if {
+     bar &&
+     baz
+  } then
+     foo
+>>>
+private def mtd: Res =
+  if bar && baz then
+     foo
+<<< remove optional braces within else-if
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then
+      barBody
+    else bazBody
+  }
+>>>
+private def mtd: Res =
+  if foo then
+     fooBody
+  else if bar then
+     barBody
+  else
+     bazBody
+<<< remove optional braces within else-if 2
+rewrite.scala3.removeOptionalBraces = yes
+===
+private def mtd: Res =
+  if foo then fooBody
+  else {
+    if bar then barBody else bazBody
+  }
+>>>
+private def mtd: Res =
+  if foo then
+     fooBody
+  else if bar then
+     barBody
+  else
+     bazBody
 <<< rewrite with given-with
 rewrite.scala3.removeOptionalBraces = oldSyntaxToo
 ===