diff --git a/bootstraptest/test_yjit.rb b/bootstraptest/test_yjit.rb
index 379591641c..aaf70e7b93 100644
--- a/bootstraptest/test_yjit.rb
+++ b/bootstraptest/test_yjit.rb
@@ -259,7 +259,7 @@ assert_normal_exit %q{
 }
 
 assert_normal_exit %q{
-  # Test to ensure send on overriden c functions
+  # Test to ensure send on overridden c functions
   # doesn't corrupt the stack
   class Bar
     def bar(x)
@@ -4195,7 +4195,7 @@ assert_equal '[true, true, true, true, true]', %q{
   calling_my_func
 }
 
-# Regresssion test: rest and optional and splat
+# Regression test: rest and optional and splat
 assert_equal 'true', %q{
   def my_func(base=nil, *args)
     [base, args]
@@ -4225,7 +4225,7 @@ assert_equal 'true', %q{
   end
 } unless rjit_enabled? # Not yet working on RJIT
 
-# Regresssion test: register allocator on expandarray
+# Regression test: register allocator on expandarray
 assert_equal '[]', %q{
   func = proc { [] }
   proc do
diff --git a/spec/ruby/core/hash/hash_spec.rb b/spec/ruby/core/hash/hash_spec.rb
index 2ccb483120..19eb806dc4 100644
--- a/spec/ruby/core/hash/hash_spec.rb
+++ b/spec/ruby/core/hash/hash_spec.rb
@@ -43,7 +43,7 @@ describe "Hash#hash" do
   end
 
   ruby_version_is "3.1" do
-    it "allows ommiting values" do
+    it "allows omitting values" do
       a = 1
       b = 2
 
diff --git a/spec/ruby/shared/sizedqueue/enque.rb b/spec/ruby/shared/sizedqueue/enque.rb
index 7b6b1df730..6307f3c3ca 100644
--- a/spec/ruby/shared/sizedqueue/enque.rb
+++ b/spec/ruby/shared/sizedqueue/enque.rb
@@ -73,7 +73,7 @@ describe :sizedqueue_enq, shared: true do
         t.join
       end
 
-      it "returns nil if no space is avialable and timeout is 0" do
+      it "returns nil if no space is available and timeout is 0" do
         q = @object.call(1)
         q.send(@method, 1, timeout: 0).should == q
         q.send(@method, 2, timeout: 0).should == nil
diff --git a/yjit/src/asm/arm64/inst/smulh.rs b/yjit/src/asm/arm64/inst/smulh.rs
index 796a19433f..5e9b231fde 100644
--- a/yjit/src/asm/arm64/inst/smulh.rs
+++ b/yjit/src/asm/arm64/inst/smulh.rs
@@ -1,4 +1,4 @@
-/// The struct that represents an A64 signed multipy high instruction
+/// The struct that represents an A64 signed multiply high instruction
 ///
 /// +-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+
 /// | 31 30 29 28 | 27 26 25 24 | 23 22 21 20 | 19 18 17 16 | 15 14 13 12 | 11 10 09 08 | 07 06 05 04 | 03 02 01 00 |
diff --git a/yjit/src/backend/x86_64/mod.rs b/yjit/src/backend/x86_64/mod.rs
index 043139f492..25c92642d3 100644
--- a/yjit/src/backend/x86_64/mod.rs
+++ b/yjit/src/backend/x86_64/mod.rs
@@ -135,7 +135,7 @@ impl Assembler
             // Opnd::Value operands into registers here because:
             //
             //   - Most instructions can't be encoded with 64-bit immediates.
-            //   - We look for Op::Load specifically when emiting to keep GC'ed
+            //   - We look for Op::Load specifically when emitting to keep GC'ed
             //     VALUEs alive. This is a sort of canonicalization.
             let mut unmapped_opnds: Vec<Opnd> = vec![];
 
diff --git a/yjit/src/codegen.rs b/yjit/src/codegen.rs
index a50bed3bc3..6d85ca4266 100644
--- a/yjit/src/codegen.rs
+++ b/yjit/src/codegen.rs
@@ -4395,7 +4395,7 @@ fn jit_rb_kernel_is_a(
     let sample_rhs = jit.peek_at_stack(&asm.ctx, 0);
     let sample_lhs = jit.peek_at_stack(&asm.ctx, 1);
 
-    // We are not allowing module here because the module hierachy can change at runtime.
+    // We are not allowing module here because the module hierarchy can change at runtime.
     if !unsafe { RB_TYPE_P(sample_rhs, RUBY_T_CLASS) } {
         return false;
     }
@@ -6127,7 +6127,7 @@ fn gen_send_iseq(
         }
 
         if iseq_has_rest && opt_num > 0 {
-            // If we have a rest and option arugments
+            // If we have a rest and option arguments
             // we are going to set the pc_offset for where
             // to jump in the called method.
             // If the number of args change, that would need to
@@ -6163,7 +6163,7 @@ fn gen_send_iseq(
     assert_eq!(opts_missing + opts_filled, opt_num);
     assert!(opts_filled >= 0);
 
-    // ISeq with optional paramters start at different
+    // ISeq with optional parameters start at different
     // locations depending on the number of optionals given.
     if opt_num > 0 {
         assert!(opts_filled >= 0);
diff --git a/yjit/src/invariants.rs b/yjit/src/invariants.rs
index ad684cd54e..59f7b70e20 100644
--- a/yjit/src/invariants.rs
+++ b/yjit/src/invariants.rs
@@ -407,7 +407,7 @@ pub extern "C" fn rb_yjit_constant_ic_update(iseq: *const rb_iseq_t, ic: IC, ins
     let insn_idx: IseqIdx = if let Ok(idx) = insn_idx.try_into() {
         idx
     } else {
-        // The index is too large, YJIT can't possibily have code for it,
+        // The index is too large, YJIT can't possibly have code for it,
         // so there is nothing to invalidate.
         return;
     };