diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3217162..b7e782b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - X10D: Removed `DateOnly.Deconstruct` due to conflict with
 [`System.DateOnly.Deconstruct`](https://learn.microsoft.com/en-us/dotnet/api/system.datetime.deconstruct?view=net-8.0).
+- X10D: Removed `Span<T>.Count` due to conflict with
+[`System.MemoryExtensions.Count`](https://learn.microsoft.com/en-us/dotnet/api/system.memoryextensions.count?view=net-8.0).
+- X10D: Removed `ReadOnlySpan<T>.Count` due to conflict with
+[`System.MemoryExtensions.Count`](https://learn.microsoft.com/en-us/dotnet/api/system.memoryextensions.count?view=net-8.0).
 - X10D: Removed `Span<T>.Split` for .NET 9.0 target due to conflicts with
 [`System.MemoryExtensions.Split`](https://learn.microsoft.com/en-us/dotnet/api/system.memoryextensions.split?view=net-9.0).
 
diff --git a/X10D.Tests/src/Collections/SpanTest.cs b/X10D.Tests/src/Collections/SpanTest.cs
index 1f0b58a..d0b12d0 100644
--- a/X10D.Tests/src/Collections/SpanTest.cs
+++ b/X10D.Tests/src/Collections/SpanTest.cs
@@ -8,46 +8,6 @@ namespace X10D.Tests.Collections;
 [TestFixture]
 internal class SpanTest
 {
-    [Test]
-    public void Count_ShouldReturn0_GivenEmptySpan()
-    {
-        Span<int> span = Span<int>.Empty;
-
-        int count = span.Count(2);
-
-        Assert.That(count, Is.Zero);
-    }
-
-    [Test]
-    public void Count_ShouldReturn0_GivenEmptyReadOnlySpan()
-    {
-        ReadOnlySpan<int> span = ReadOnlySpan<int>.Empty;
-
-        int count = span.Count(2);
-
-        Assert.That(count, Is.Zero);
-    }
-
-    [Test]
-    public void Count_ShouldReturn8_GivenSpanWith8MatchingElements()
-    {
-        Span<int> span = [1, 2, 3, 2, 5, 2, 7, 2, 9, 2, 11, 2, 13, 2, 15, 2];
-
-        int count = span.Count(2);
-
-        Assert.That(count, Is.EqualTo(8));
-    }
-
-    [Test]
-    public void Count_ShouldReturn8_GivenReadOnlySpanWith8MatchingElements()
-    {
-        ReadOnlySpan<int> span = [1, 2, 3, 2, 5, 2, 7, 2, 9, 2, 11, 2, 13, 2, 15, 2];
-
-        int count = span.Count(2);
-
-        Assert.That(count, Is.EqualTo(8));
-    }
-
     [Test]
     public void Replace_ShouldReplaceAllElements_GivenSpanOfInt32()
     {
diff --git a/X10D/src/Collections/SpanExtensions.cs b/X10D/src/Collections/SpanExtensions.cs
index d063dd9..80add99 100644
--- a/X10D/src/Collections/SpanExtensions.cs
+++ b/X10D/src/Collections/SpanExtensions.cs
@@ -5,43 +5,6 @@ namespace X10D.Collections;
 /// </summary>
 public static class SpanExtensions
 {
-    /// <summary>
-    ///     Returns the number of times that a specified element appears in a span of elements of the same type.
-    /// </summary>
-    /// <param name="source">The source to search.</param>
-    /// <param name="element">The element to count.</param>
-    /// <typeparam name="T">The type of elements in <paramref name="source" />.</typeparam>
-    /// <returns>The number of times that <paramref name="element" /> appears in <paramref name="source" />.</returns>
-    public static int Count<T>(this in Span<T> source, T element)
-        where T : IEquatable<T>
-    {
-        return source.AsReadOnly().Count(element);
-    }
-
-    /// <summary>
-    ///     Returns the number of times that a specified element appears in a read-only span of elements of the same type.
-    /// </summary>
-    /// <param name="source">The source to search.</param>
-    /// <param name="element">The element to count.</param>
-    /// <typeparam name="T">The type of elements in <paramref name="source" />.</typeparam>
-    /// <returns>The number of times that <paramref name="element" /> appears in <paramref name="source" />.</returns>
-    public static int Count<T>(this in ReadOnlySpan<T> source, T element)
-        where T : IEquatable<T>
-    {
-        var count = 0;
-
-        for (var index = 0; index < source.Length; index++)
-        {
-            T item = source[index];
-            if (item.Equals(element))
-            {
-                count++;
-            }
-        }
-
-        return count;
-    }
-
     /// <summary>
     ///     Returns a read-only <see cref="ReadOnlySpan{T}" /> wrapper for the current span.
     /// </summary>