diff --git a/src/indexOfSlice.zig b/src/indexOfSlice.zig
new file mode 100644
index 0000000000000000000000000000000000000000..7d065eaa282b39e4234927a75cb9d40953bd649f
--- /dev/null
+++ b/src/indexOfSlice.zig
@@ -0,0 +1,19 @@
+const std = @import("std");
+const string = []const u8;
+const extras = @import("./lib.zig");
+
+pub fn indexOfSlice(comptime T: type, haystack: []const []const T, needle: []const T) ?usize {
+    for (haystack, 0..) |item, i| {
+        if (std.mem.eql(u8, item, needle)) {
+            return i;
+        }
+    }
+    return null;
+}
+
+test {
+    try std.testing.expect(indexOfSlice(u8, &.{ "a", "b", "c", "d" }, "b") == 1);
+}
+test {
+    try std.testing.expect(indexOfSlice(u8, &.{}, "b") == null);
+}
diff --git a/src/lib.zig b/src/lib.zig
index 3caa23f44390d7f84fc827bf445b6f2ea915450d..f5881844952bf91c53a2cb4ced03168e2ec597a1 100644
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -99,3 +99,4 @@ pub usingnamespace @import("./isZigString.zig");
 pub usingnamespace @import("./isIndexable.zig");
 pub usingnamespace @import("./isSlice.zig");
 pub usingnamespace @import("./matchesNone.zig");
+pub usingnamespace @import("./indexOfSlice.zig");