Lihula valla lipp on jaotatud müürihambuliselt kaheks võrdseks horisontaalseks väljaks. Lipu ülemine pool on punane, alumine valge. Valge pool algab müürihambaga. Iga hamba pikkus on 1/9 lipu pikkusest, laius 1/7 lipu laiusest. Lipu normaalsuurus on 105×165 cm, laiuse ja pikkuse suhe on 7:11 ühikut.
Lipp kinnitati 30. juulil 1996. Lipu autoriks on Tõnu Kukk.
§ 5. Results of intellectual activities to which this Act does not apply
1) ideas, images, notions, theories, processes, systems, methods, concepts, principles, discoveries, inventions, and other results of intellectual activities which are described, explained or expressed in any other manner in a work;
2) works of folklore;
3) legislation and administrative documents (acts, decrees, regulations, statutes, instructions, directives) and official translations thereof;
4) court decisions and official translations thereof;
5) official symbols of the state and insignia of organisations (flags, coats of arms, orders, medals, badges, etc.);
6) news of the day;
7) facts and data;
8) ideas and principles which underlie any element of a computer program, including those which underlie its user interfaces.
Hence it is assumed that this image has been released into the public domain. However, in some instances the use of this image might be regulated by other laws.