The Org Manual: Languages

14.7 Languages

Code blocks in the following languages are supported.

Language	Identifier	Language	Identifier
Asymptote	asymptote	Awk	awk
Emacs Calc	calc	C	C
C++	C++	Clojure	clojure
CSS	css	ditaa	ditaa
Graphviz	dot	Emacs Lisp	emacs-lisp
gnuplot	gnuplot	Haskell	haskell
Java	java
Javascript	js	LaTeX	latex
Ledger	ledger	Lisp	lisp
Lilypond	lilypond	MATLAB	matlab
Mscgen	mscgen	Objective Caml	ocaml
Octave	octave	Org mode	org
Oz	oz	Perl	perl
Plantuml	plantuml	Python	python
R	R	Ruby	ruby
Sass	sass	Scheme	scheme
GNU Screen	screen	shell	sh
SQL	sql	SQLite	sqlite

Language-specific documentation is available for some languages. If available, it can be found at http://orgmode.org/worg/org-contrib/babel/languages.html.

The option org-babel-load-languages controls which languages are enabled for evaluation (by default only emacs-lisp is enabled). This variable can be set using the customization interface or by adding code like the following to your emacs configuration.

The following disables emacs-lisp evaluation and enables evaluation of R code blocks.

(org-babel-do-load-languages
 'org-babel-load-languages
 '((emacs-lisp . nil)
   (R . t)))

It is also possible to enable support for a language by loading the related elisp file with require.

The following adds support for evaluating clojure code blocks.

(require 'ob-clojure)