| ลำเอียง | lahmM iiangM | verb | to be partial; to be unfair; to be biased |
| noun | [ความลำเอียง] prejudice |
ลิกเตนสไตน์  | likH dtaL naehtL dtai[n]M | proper noun, geographical | [ประเทศลิกเตนสไตน์] Liechtenstein, a country in Europe |
| ลิกเต็นสไตน์ | likH dtenM saL dtai[n]M | | [alternate spelling of ลิกเตนสไตน์] |
| ลิเก | liH gaehM | noun | [a certain form of] Thai folk opera, (sometimes transliterated as) "like" |
| ลิขสิทธิ์ | likH sitL | noun | copyright |
| ลิขิต | liH khitL | verb, transitive, intransitive, formal, poetic, loanword, Pali | to scratch; to scrape; to write; to engrave; to draw |
| noun, formal, poetic, loanword, Pali | [holy language used by monks] writing; drawing; letter; epistle; carving |
 ลิง  | lingM | noun | monkey |
| noun, proper noun, colloquial | [ปีลิง] year of the Monkey |
ลิงกอริลลา | lingM gaawM rinM laaM | noun | gorilla |
| ลิงค์ | ling[k]M | noun, formal, loanword, Pali | sex; gender; race; characteristic; symbol; sign of sex or gender; [grammar] gender |
| ลิ้งค์ | ling[k]H | noun, verb, loanword, English | [Thai transcription of the foreign loanword, "link"] |
| ลิ้งค์สยอง | ling[k]H saL yaawngR | noun, phrase, colloquial | spooky |
| ลิงจุ่น | lingM joonL | noun | Bengal slow loris Nycticebus bengalensis |
| ลิงชิงหลัก | lingM chingM lakL | noun, proper noun, phrase, colloquial | [name of a traditional Thai game/entertainment in the past] |
| ลิงชิมแพนซี | lingM chimM phaaenM seeM | noun | chimpanzee |
| ลิ้งซ์ | ling[s]H | loanword, English | [Thai transcription of the foreign loanword, "lynx"] |
| ลิงยังตกต้นไม้ | lingM yangM dtohkL dtohnF maaiH | example sentence, idiom | "Homer sometimes nods." |
| ลิงโลด | lingM lohtF | verb, intransitive | to jump with joy; be jubilant |
| ลิงอุรังอุตัง | lingM ooL rangM ooL dtangM | noun | orangutan; orang-utan |
| ลิซ่า | leeH saaF | proper noun | Lisa [an English given name] |
| ลิซึ่ม | liH seumF | adjective, colloquial, loanword, English | [Thai transcription of the foreign loanword, "lism"colloquial slang that means] crazed; crazy |
| ลิด | litH | verb | to trim; to prune |
| ลิดรอน | litH raawnM | verb | to deprive; cut off; withhold |
| ลิตเติลร็อค | litH dteernM rawkH | proper noun, geographical | Little Rock, the capital city of อาร์คันซอ (Arkansas) |
| ลิตเติ้ลร็อค | litH dteernF rawkH | | [alternate spelling of ลิตเติลร็อค] |
| ลิตร | lit[r]H | noun, loanword, English | [Thai transcription of the foreign loanword, "liter"] the basic unit of volume measurement in the metric system |
| ลิทัวเนีย | liH thuaaM niiaM | proper noun, geographical | [ประเทศลิทัวเนีย] Lithuania, a country in Europe |
| ลิเทียม | liH thiiamM | | [alternate spelling of ลิเธียม] |
| ลิเทียมไฮดรอกไซด์ | liH thiiamM haiM daawnM ohkL sai[d]M | noun | lithium hydroxide |
| ลิธัวเนีย | liH thuaaM niiaM | | [alternate spelling of ลิทัวเนีย] |
| ลิเธียม | liH thiiamM | noun, loanword, English | [chemistry] Lithium, Li, atomic number 3 |
| ลิ้น | linH | noun | tongue |
| noun | reed; valve |
| ลิ้นไก่ | linH gaiL | noun | uvula |
| ลิ้นขัด | linH khatL | adjective, verb, intransitive, phrase, figurative, colloquial, idiom | tongue-tied |
| ลินคอล์น | linM khaaw[l]nM | proper noun, geographical | Lincoln, the capital city of เนบราสก้า (Nebraska) |
| ลิ้นจี่ | linH jeeL | noun, adjective | [general] lychee; lichee |
| noun | [ต้นลิ้นจี่] lychee tree, Litchi chinensis |
| [ลูกลิ้นจี่] lychee fruit |
| ลิ้นชัก | linH chakH | noun | [of desk, dresser, cabinet] a drawer |
| ลินดา | linM daaM | proper noun | Linda [an English given name] |
| ลิ้นปี่ | linH bpeeL | noun | [musical] flute reed |
| ลิ้นปี่ | linH bpeeL | noun | xiphisternum; xiphoid process |
| ลิ้นลม | linH lohmM | noun, figurative | artful speech; eloquence |
| ลินิน | liH ninM | noun, adjective | [ผ้าลินิน] [Thai transcription of the foreign loanword, "linen"] |
| ลินุกซ์ | liH nook[s]H | proper noun, loanword, English | [Thai transcription of the foreign loanword, "Linux"] [name of a specific] computer operating system |
| ลิบ | lipH | adjective | distant; remote; far away; separated by a great distance |
| ลิบลับ | lipH lapH | adjective | distant; remote; far away |
| ลิบลิ่ว | lipH liuF | attributive verb | far, far away |
| attributive verb | [is] exorbitant; excessive; unreasonable; immoderate |
| ลิเบรอะวิลล์ | liH baehnM aL win[l]M | | [alternate spelling of ลีเบรอวิลล์] |
| ลิเบีย | liH biiaM | proper noun, geographical | [ประเทศลิเบีย] Libya, a country in Africa |
| ลิปดา | lipH daaM | noun | [polar coordinates] a minute; 1/60th of one degree of rotation |
| ลิปสติก | lipH saL dtikL | noun, loanword, English | [Thai transcription of the foreign loanword, "lipstick"] |
| ลิพิทอร์ | liH phiH thaaw[r]M | noun, proper noun, formal, loanword, English | [Thai transcription of the foreign loanword, "Lipitor"a Cholesterol lowering drug, cholesterol medication] |
