diff --git a/BUILD.bazel b/BUILD.bazel
index 76c3f80e6e2fb..a411b394f4e6b 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -21,7 +21,7 @@ package(
     default_visibility = ["//visibility:public"],
 )
 
-# Hermetic python envionment, currently only used for CI infra and scripts.
+# Hermetic python environment, currently only used for CI infra and scripts.
 
 py_runtime(
     name = "python3_runtime",
diff --git a/ci/docker/ml.build.Dockerfile b/ci/docker/ml.build.Dockerfile
index 6b8d42f99fbd2..05af07ec8cc91 100644
--- a/ci/docker/ml.build.Dockerfile
+++ b/ci/docker/ml.build.Dockerfile
@@ -19,7 +19,7 @@ set -euo pipefail
 set -x
 
 if [[ "${PYTHON-}" == "3.12" ]]; then
-  # hebo and doc test depdencies are not needed for 3.12 test jobs
+  # hebo and doc test dependencies are not needed for 3.12 test jobs
   TRAIN_TESTING=1 TUNE_TESTING=1 DATA_PROCESSING_TESTING=1 \
     INSTALL_HDFS=1 ./ci/env/install-dependencies.sh
 else
diff --git a/ci/env/install-core-prerelease-dependencies.sh b/ci/env/install-core-prerelease-dependencies.sh
index 55ba3b1e55f99..9f0c55afae57c 100755
--- a/ci/env/install-core-prerelease-dependencies.sh
+++ b/ci/env/install-core-prerelease-dependencies.sh
@@ -3,7 +3,7 @@
 set -e
 
 # install all unbounded dependencies in setup.py for ray core
-# TOOD(scv119) reenable grpcio once https://github.com/grpc/grpc/issues/31885 is fixed.
-# TOOD(scv119) reenable jsonschema once https://github.com/ray-project/ray/issues/33411 is fixed.
+# TODO(scv119) reenable grpcio once https://github.com/grpc/grpc/issues/31885 is fixed.
+# TODO(scv119) reenable jsonschema once https://github.com/ray-project/ray/issues/33411 is fixed.
 DEPS=(aiosignal frozenlist requests protobuf)
 python -m pip install -U --pre --upgrade-strategy=eager "${DEPS[@]}"
diff --git a/ci/lint/check-banned-words.sh b/ci/lint/check-banned-words.sh
index 18131d9da3989..460635b5ac993 100755
--- a/ci/lint/check-banned-words.sh
+++ b/ci/lint/check-banned-words.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Checks Python and doc files for common mispellings.
+# Checks Python and doc files for common misspellings.
 
 BANNED_WORDS="RLLib Rllib Kuberay"
 
diff --git a/ci/lint/check_import_order.py b/ci/lint/check_import_order.py
index ce73f639e6f9c..2f1b5f84c1d8b 100644
--- a/ci/lint/check_import_order.py
+++ b/ci/lint/check_import_order.py
@@ -57,7 +57,7 @@ def check_import(file):
     parser.add_argument("path", help="File path to check. e.g. '.' or './src'")
     # TODO(simon): For the future, consider adding a feature to explicitly
     # white-list the path instead of skipping them.
-    parser.add_argument("-s", "--skip", action="append", help="Skip certian directory")
+    parser.add_argument("-s", "--skip", action="append", help="Skip certain directory")
     args = parser.parse_args()
 
     file_path = Path(args.path)
diff --git a/cpp/include/ray/api.h b/cpp/include/ray/api.h
index e7378ba9d0eec..a911813c7be69 100644
--- a/cpp/include/ray/api.h
+++ b/cpp/include/ray/api.h
@@ -79,7 +79,7 @@ std::vector<std::shared_ptr<T>> Get(const std::vector<ray::ObjectRef<T>> &object
 /// This method will be blocked until the object is ready.
 ///
 /// \param[in] object The object reference which should be returned.
-/// \param[in] timeout_ms The maximum amount of time in miliseconds to wait before
+/// \param[in] timeout_ms The maximum amount of time in milliseconds to wait before
 /// returning.
 /// \return shared pointer of the result.
 template <typename T>
@@ -89,7 +89,7 @@ std::shared_ptr<T> Get(const ray::ObjectRef<T> &object, const int &timeout_ms);
 /// This method will be blocked until all the objects are ready.
 ///
 /// \param[in] objects The object array which should be got.
-/// \param[in] timeout_ms The maximum amount of time in miliseconds to wait before
+/// \param[in] timeout_ms The maximum amount of time in milliseconds to wait before
 /// returning.
 /// \return shared pointer array of the result.
 template <typename T>
diff --git a/cpp/include/ray/api/object_ref.h b/cpp/include/ray/api/object_ref.h
index bd3c24fe32317..b23fedcf38aea 100644
--- a/cpp/include/ray/api/object_ref.h
+++ b/cpp/include/ray/api/object_ref.h
@@ -106,7 +106,7 @@ class ObjectRef {
   /// Get the object from the object store.
   /// This method will be blocked until the object is ready.
   ///
-  /// \param timeout_ms The maximum amount of time in miliseconds to wait before
+  /// \param timeout_ms The maximum amount of time in milliseconds to wait before
   /// returning.
   /// \return shared pointer of the result.
   std::shared_ptr<T> Get(const int &timeout_ms) const;
@@ -207,7 +207,7 @@ class ObjectRef<void> {
   /// Get the object from the object store.
   /// This method will be blocked until the object is ready.
   ///
-  /// \param timeout_ms The maximum amount of time in miliseconds to wait before
+  /// \param timeout_ms The maximum amount of time in milliseconds to wait before
   /// returning.
   ///  \return shared pointer of the result.
   void Get(const int &timeout_ms) const {
diff --git a/cpp/src/ray/runtime/task/local_mode_task_submitter.cc b/cpp/src/ray/runtime/task/local_mode_task_submitter.cc
index f1155dab1b4d4..ec628f1f3cacc 100644
--- a/cpp/src/ray/runtime/task/local_mode_task_submitter.cc
+++ b/cpp/src/ray/runtime/task/local_mode_task_submitter.cc
@@ -34,7 +34,7 @@ ObjectID LocalModeTaskSubmitter::Submit(InvocationSpec &invocation,
                                         const ActorCreationOptions &options) {
   /// TODO(SongGuyang): Make the information of TaskSpecification more reasonable
   /// We just reuse the TaskSpecification class and make the single process mode work.
-  /// Maybe some infomation of TaskSpecification are not reasonable or invalid.
+  /// Maybe some information of TaskSpecification are not reasonable or invalid.
   /// We will enhance this after implement the cluster mode.
   auto functionDescriptor = FunctionDescriptorBuilder::BuildCpp(
       invocation.remote_function_holder.function_name);
diff --git a/cpp/src/ray/test/examples/metric_example.cc b/cpp/src/ray/test/examples/metric_example.cc
index ffba2ac8b3fb0..f14938a33ed23 100644
--- a/cpp/src/ray/test/examples/metric_example.cc
+++ b/cpp/src/ray/test/examples/metric_example.cc
@@ -26,7 +26,7 @@ void test_metric(const std::string &exec_type, int total_time) {
   ray::Gauge gauge("ray_test_gauge", "test gauge", "unit", {"tag1", "tag2"});
   ray::Counter counter("ray_test_counter", "test counter", "unit", {"tag1", "tag2"});
   ray::Histogram histogram(
-      "ray_test_histogram", "test hitogram", "unit", {1, 10}, {"tag1", "tag2"});
+      "ray_test_histogram", "test histogram", "unit", {1, 10}, {"tag1", "tag2"});
   ray::Sum sum("ray_test_sum", "test sum", "unit", {"tag1", "tag2"});
 
   std::unordered_map<std::string, std::string> tag_1 = {{"tag1", "increasing"},
diff --git a/java/api/src/main/java/io/ray/api/ObjectRef.java b/java/api/src/main/java/io/ray/api/ObjectRef.java
index 202b47cf706d0..9be2f50c32943 100644
--- a/java/api/src/main/java/io/ray/api/ObjectRef.java
+++ b/java/api/src/main/java/io/ray/api/ObjectRef.java
@@ -17,7 +17,7 @@ public interface ObjectRef<T> {
    * Fetch the object from the object store, this method will block until the object is locally
    * available.
    *
-   * @param timeoutMs The maximum amount of time in miliseconds to wait before returning.
+   * @param timeoutMs The maximum amount of time in milliseconds to wait before returning.
    * @throws RayTimeoutException If it's timeout to get the object.
    */
   T get(long timeoutMs);
diff --git a/java/api/src/main/java/io/ray/api/Ray.java b/java/api/src/main/java/io/ray/api/Ray.java
index a6be0cd0469f7..09c6a37de82b3 100644
--- a/java/api/src/main/java/io/ray/api/Ray.java
+++ b/java/api/src/main/java/io/ray/api/Ray.java
@@ -80,7 +80,7 @@ public static <T> ObjectRef<T> put(T obj, BaseActorHandle owner) {
    * Get an object by `ObjectRef` from the object store.
    *
    * @param objectRef The reference of the object to get.
-   * @param timeoutMs The maximum amount of time in miliseconds to wait before returning.
+   * @param timeoutMs The maximum amount of time in milliseconds to wait before returning.
    * @return The Java object.
    * @throws RayTimeoutException If it's timeout to get the object.
    */
@@ -102,7 +102,7 @@ public static <T> T get(ObjectRef<T> objectRef) {
    * Get a list of objects by `ObjectRef`s from the object store.
    *
    * @param objectList A list of object references.
-   * @param timeoutMs The maximum amount of time in miliseconds to wait before returning.
+   * @param timeoutMs The maximum amount of time in milliseconds to wait before returning.
    * @return A list of Java objects.
    * @throws RayTimeoutException If it's timeout to get the object.
    */