diff --git a/README.md b/README.md
index 88b9e285c..df7e0f14c 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,7 @@ O | Objective-C, OCaml, Octave, OnesEnterprise, OpenEdge ABL, OpenSCAD, Org Mode
 P | PacmanConf, Perl, PHP, PHTML, Pig, PkgConfig, PL/pgSQL, plaintext, Pony, PostgreSQL SQL dialect, PostScript, POVRay, PowerShell, Prolog, PromQL, Properties, Protocol Buffer, Puppet, Python 2, Python
 Q | QBasic
 R | R, Racket, Ragel, Raku, react, ReasonML, reg, reStructuredText, Rexx, Ruby, Rust
-S | SAS, Sass, Scala, Scheme, Scilab, SCSS, Smalltalk, Smarty, Snobol, Solidity, SPARQL, SQL, SquidConf, Standard ML, Stylus, Svelte, Swift, SYSTEMD, systemverilog
+S | SAS, Sass, Scala, Scheme, Scilab, SCSS, Sed, Smalltalk, Smarty, Snobol, Solidity, SPARQL, SQL, SquidConf, Standard ML, Stylus, Svelte, Swift, SYSTEMD, systemverilog
 T | TableGen, TASM, Tcl, Tcsh, Termcap, Terminfo, Terraform, TeX, Thrift, TOML, TradingView, Transact-SQL, Turing, Turtle, Twig, TypeScript, TypoScript, TypoScriptCssData, TypoScriptHtmlData
 V | VB.net, verilog, VHDL, VimL, vue
 W | WDTE
diff --git a/lexers/embedded/sed.xml b/lexers/embedded/sed.xml
new file mode 100644
index 000000000..2209aa77f
--- /dev/null
+++ b/lexers/embedded/sed.xml
@@ -0,0 +1,28 @@
+<lexer>
+  <config>
+    <name>Sed</name>
+    <alias>sed</alias>
+    <alias>gsed</alias>
+    <alias>ssed</alias>
+    <filename>*.sed</filename>
+    <filename>*.[gs]sed</filename>
+    <mime_type>text/x-sed</mime_type>
+  </config>
+  <rules>
+    <state name="root">
+      <rule pattern="\s+"><token type="TextWhitespace"/></rule>
+      <rule pattern="#.*$"><token type="CommentSingle"/></rule>
+      <rule pattern="[0-9]+"><token type="LiteralNumberInteger"/></rule>
+      <rule pattern="\$"><token type="Operator"/></rule>
+      <rule pattern="[{};,!]"><token type="Punctuation"/></rule>
+      <rule pattern="[dDFgGhHlnNpPqQxz=]"><token type="Keyword"/></rule>
+      <rule pattern="([berRtTvwW:])([^;\n]*)"><bygroups><token type="Keyword"/><token type="LiteralStringSingle"/></bygroups></rule>
+      <rule pattern="([aci])((?:.*?\\\n)*(?:.*?[^\\]$))"><bygroups><token type="Keyword"/><token type="LiteralStringDouble"/></bygroups></rule>
+      <rule pattern="([qQ])([0-9]*)"><bygroups><token type="Keyword"/><token type="LiteralNumberInteger"/></bygroups></rule>
+      <rule pattern="(/)((?:(?:\\[^\n]|[^\\])*?\\\n)*?(?:\\.|[^\\])*?)(/)"><bygroups><token type="Punctuation"/><token type="LiteralStringRegex"/><token type="Punctuation"/></bygroups></rule>
+      <rule pattern="(\\(.))((?:(?:\\[^\n]|[^\\])*?\\\n)*?(?:\\.|[^\\])*?)(\2)"><bygroups><token type="Punctuation"/>None<token type="LiteralStringRegex"/><token type="Punctuation"/></bygroups></rule>
+      <rule pattern="(y)(.)((?:(?:\\[^\n]|[^\\])*?\\\n)*?(?:\\.|[^\\])*?)(\2)((?:(?:\\[^\n]|[^\\])*?\\\n)*?(?:\\.|[^\\])*?)(\2)"><bygroups><token type="Keyword"/><token type="Punctuation"/><token type="LiteralStringSingle"/><token type="Punctuation"/><token type="LiteralStringSingle"/><token type="Punctuation"/></bygroups></rule>
+      <rule pattern="(s)(.)((?:(?:\\[^\n]|[^\\])*?\\\n)*?(?:\\.|[^\\])*?)(\2)((?:(?:\\[^\n]|[^\\])*?\\\n)*?(?:\\.|[^\\])*?)(\2)((?:[gpeIiMm]|[0-9])*)"><bygroups><token type="Keyword"/><token type="Punctuation"/><token type="LiteralStringRegex"/><token type="Punctuation"/><token type="LiteralStringSingle"/><token type="Punctuation"/><token type="Keyword"/></bygroups></rule>
+    </state>
+  </rules>
+</lexer>