diff --git a/src/tools/miri/cargo-miri/src/phases.rs b/src/tools/miri/cargo-miri/src/phases.rs
index b72b974bdbdd6..1fe3765ac9647 100644
--- a/src/tools/miri/cargo-miri/src/phases.rs
+++ b/src/tools/miri/cargo-miri/src/phases.rs
@@ -283,7 +283,7 @@ pub fn phase_rustc(mut args: impl Iterator<Item = String>, phase: RustcPhase) {
     fn is_runnable_crate() -> bool {
         // Determine whether this is cargo invoking rustc to get some infos. Ideally we'd check "is
         // there a filename passed to rustc", but that's very hard as we would have to know whether
-        // e.g. `--print foo` is a booolean flag `--print` followed by filename `foo` or equivalent
+        // e.g. `--print foo` is a boolean flag `--print` followed by filename `foo` or equivalent
         // to `--print=foo`. So instead we use this more fragile approach of detecting the presence
         // of a "query" flag rather than the absence of a filename.
         let info_query = get_arg_flag_value("--print").is_some() || has_arg_flag("-vV");
diff --git a/src/tools/miri/miri-script/src/commands.rs b/src/tools/miri/miri-script/src/commands.rs
index 9aaad9ca04a9a..3853df1619a2c 100644
--- a/src/tools/miri/miri-script/src/commands.rs
+++ b/src/tools/miri/miri-script/src/commands.rs
@@ -584,7 +584,7 @@ impl Command {
                 // Compare results (inspired by hyperfine)
                 let ratio = new_result.mean / baseline_result.mean;
                 // https://en.wikipedia.org/wiki/Propagation_of_uncertainty#Example_formulae
-                // Covariance asssumed to be 0, i.e. variables are assumed to be independent
+                // Covariance assumed to be 0, i.e. variables are assumed to be independent
                 let ratio_stddev = ratio
                     * f64::sqrt(
                         (new_result.stddev / new_result.mean).powi(2)
diff --git a/src/tools/miri/miri-script/src/main.rs b/src/tools/miri/miri-script/src/main.rs
index e41df662ca28f..564e92017ded9 100644
--- a/src/tools/miri/miri-script/src/main.rs
+++ b/src/tools/miri/miri-script/src/main.rs
@@ -135,7 +135,7 @@ pub enum Command {
     },
     /// Update and activate the rustup toolchain 'miri'.
     ///
-    /// The `rust-version` file is used to determine the commit that will be intsalled.
+    /// The `rust-version` file is used to determine the commit that will be installed.
     /// `rustup-toolchain-install-master` must be installed for this to work.
     Toolchain {
         /// Flags that are passed through to `rustup-toolchain-install-master`.
diff --git a/src/tools/miri/tests/pass/issues/issue-139553.rs b/src/tools/miri/tests/pass/issues/issue-139553.rs
index 119d589d1eada..99ac00d339717 100644
--- a/src/tools/miri/tests/pass/issues/issue-139553.rs
+++ b/src/tools/miri/tests/pass/issues/issue-139553.rs
@@ -11,7 +11,7 @@ fn main() {
 
     let t1 = thread::spawn(move || {
         // 1. The first action executed is an attempt to send the first value in the channel. This
-        //    will begin to initialize the channel but will stop at a critical momement as
+        //    will begin to initialize the channel but will stop at a critical moment as
         //    indicated by the `yield_now()` call in the `start_send` method of the implementation.
         let _ = s1.send(42);
         // 4. The sender is re-scheduled and it finishes the initialization of the channel by