diff --git a/mypyc/codegen/emitclass.py b/mypyc/codegen/emitclass.py
index 79fdd9103371..15935c3b79f2 100644
--- a/mypyc/codegen/emitclass.py
+++ b/mypyc/codegen/emitclass.py
@@ -333,7 +333,7 @@ def emit_line() -> None:
         flags.append("_Py_TPFLAGS_HAVE_VECTORCALL")
         if not fields.get("tp_vectorcall"):
             # This is just a placeholder to please CPython. It will be
-            # overriden during setup.
+            # overridden during setup.
             fields["tp_call"] = "PyVectorcall_Call"
     fields["tp_flags"] = " | ".join(flags)
 
diff --git a/mypyc/codegen/emitfunc.py b/mypyc/codegen/emitfunc.py
index 56a22447eeac..e7fb7db80413 100644
--- a/mypyc/codegen/emitfunc.py
+++ b/mypyc/codegen/emitfunc.py
@@ -432,7 +432,7 @@ def visit_set_attr(self, op: SetAttr) -> None:
             # ...and struct access for normal attributes.
             attr_expr = self.get_attr_expr(obj, op, decl_cl)
             if not op.is_init and attr_rtype.is_refcounted:
-                # This is not an initalization (where we know that the attribute was
+                # This is not an initialization (where we know that the attribute was
                 # previously undefined), so decref the old value.
                 always_defined = cl.is_always_defined(op.attr)
                 if not always_defined:
diff --git a/mypyc/common.py b/mypyc/common.py
index 7412ebef4752..c8da5ff63bab 100644
--- a/mypyc/common.py
+++ b/mypyc/common.py
@@ -56,7 +56,7 @@
 MAX_LITERAL_SHORT_INT: Final = MAX_SHORT_INT
 MIN_LITERAL_SHORT_INT: Final = -MAX_LITERAL_SHORT_INT - 1
 
-# Decription of the C type used to track the definedness of attributes and
+# Description of the C type used to track the definedness of attributes and
 # the presence of argument default values that have types with overlapping
 # error values. Each tracked attribute/argument has a dedicated bit in the
 # relevant bitmap.
diff --git a/mypyc/doc/using_type_annotations.rst b/mypyc/doc/using_type_annotations.rst
index be596fc23210..a01246ab0914 100644
--- a/mypyc/doc/using_type_annotations.rst
+++ b/mypyc/doc/using_type_annotations.rst
@@ -304,7 +304,7 @@ Example::
     def example() -> None:
         # A small integer uses the value (unboxed) representation
         x = 5
-        # A large integer the the heap (boxed) representation
+        # A large integer uses the heap (boxed) representation
         x = 2**500
         # Lists always contain boxed integers
         a = [55]
diff --git a/mypyc/irbuild/function.py b/mypyc/irbuild/function.py
index 5262b74e2853..02155d70e928 100644
--- a/mypyc/irbuild/function.py
+++ b/mypyc/irbuild/function.py
@@ -123,7 +123,7 @@ def transform_decorator(builder: IRBuilder, dec: Decorator) -> None:
     # if this is a registered singledispatch implementation with no other decorators), we should
     # treat this function as a regular function, not a decorated function
     elif dec.func in builder.fdefs_to_decorators:
-        # Obtain the the function name in order to construct the name of the helper function.
+        # Obtain the function name in order to construct the name of the helper function.
         name = dec.func.fullname.split(".")[-1]
 
         # Load the callable object representing the non-decorated function, and decorate it.
@@ -397,7 +397,7 @@ def handle_ext_method(builder: IRBuilder, cdef: ClassDef, fdef: FuncDef) -> None
     builder.functions.append(func_ir)
 
     if is_decorated(builder, fdef):
-        # Obtain the the function name in order to construct the name of the helper function.
+        # Obtain the function name in order to construct the name of the helper function.
         _, _, name = fdef.fullname.rpartition(".")
         # Read the PyTypeObject representing the class, get the callable object
         # representing the non-decorated method
diff --git a/mypyc/irbuild/ll_builder.py b/mypyc/irbuild/ll_builder.py
index 691f4729e4a4..2391ccc4d0ed 100644
--- a/mypyc/irbuild/ll_builder.py
+++ b/mypyc/irbuild/ll_builder.py
@@ -1386,7 +1386,7 @@ def compare_tagged_condition(
     ) -> None:
         """Compare two tagged integers using given operator (conditional context).
 
-        Assume lhs and and rhs are tagged integers.
+        Assume lhs and rhs are tagged integers.
 
         Args:
             lhs: Left operand
diff --git a/mypyc/lib-rt/dict_ops.c b/mypyc/lib-rt/dict_ops.c
index ba565257fd72..c0cc8d5a7f87 100644
--- a/mypyc/lib-rt/dict_ops.c
+++ b/mypyc/lib-rt/dict_ops.c
@@ -89,7 +89,7 @@ PyObject *CPyDict_SetDefaultWithEmptyDatatype(PyObject *dict, PyObject *key,
                                               int data_type) {
     PyObject *res = CPyDict_GetItem(dict, key);
     if (!res) {
-        // CPyDict_GetItem() would generates an PyExc_KeyError
+        // CPyDict_GetItem() would generates a PyExc_KeyError
         // when key is not found.
         PyErr_Clear();
 
diff --git a/mypyc/lib-rt/str_ops.c b/mypyc/lib-rt/str_ops.c
index 3c0d275fbe39..90b19001f8f0 100644
--- a/mypyc/lib-rt/str_ops.c
+++ b/mypyc/lib-rt/str_ops.c
@@ -188,7 +188,7 @@ PyObject *CPyStr_GetSlice(PyObject *obj, CPyTagged start, CPyTagged end) {
     return CPyObject_GetSlice(obj, start, end);
 }
 
-/* Check if the given string is true (i.e. it's length isn't zero) */
+/* Check if the given string is true (i.e. its length isn't zero) */
 bool CPyStr_IsTrue(PyObject *obj) {
     Py_ssize_t length = PyUnicode_GET_LENGTH(obj);
     return length != 0;
diff --git a/mypyc/test/test_run.py b/mypyc/test/test_run.py
index c867c9d37dac..6a5ab87fca49 100644
--- a/mypyc/test/test_run.py
+++ b/mypyc/test/test_run.py
@@ -255,7 +255,7 @@ def run_case_step(self, testcase: DataDrivenTestCase, incremental_step: int) ->
             assert False, "Compile error"
 
         # Check that serialization works on this IR. (Only on the first
-        # step because the the returned ir only includes updated code.)
+        # step because the returned ir only includes updated code.)
         if incremental_step == 1:
             check_serialization_roundtrip(ir)