| ลูกขุน | luukF khoonR | noun, formal | jury; juror |
ลูกเขย  | luukF kheeuyR | noun | son-in-law |
| ลูกครึ่ง | luukF khreungF | noun | person of mixed Thai and foreign blood |
| ลูกความ | luukF khwaamM | noun | client |
| ลูกค้า | luukF khaaH | noun | customer |
| ลูกคิด | luukF khitH | noun | abacus |
| ลูกคู่ | luukF khuuF | noun | chorus |
| ลูกเงาะ | luukF ngawH | | rambutan fruit |
| ลูกจันทน์เทศ | luukF janM tha[n]H thaehtF | | nutmeg nut |
| ลูกจ้าง | luukF jaangF | noun | employee |
| ลูกเจี๊ยบ | luukF jiiapH | noun | a chick |
| ลูกชมพู่ | luukF chohmM phuuF | noun | fruit of Pink Rose Apple or Malay Apple Tree |
| ลูกช้าง | luukF chaangH | noun | elephant calf |
| ลูกชาย | luukF chaayM | noun | son; male child |
| ลูกชายของคุณมีความรู้มาก | luukF chaayM khaawngR khoonM meeM khwaamM ruuH maakF | example sentence | "Your son knows a lot. (Has a lot of knowledge)" |
| ลูกชายฉันว่ายน้ำแข็งแล้ว แต่ลูกสาวยังว่ายไม่เป็น | luukF chaayM chanR waayF naahmH khaengR laaeoH dtaaeL luukF saaoR yangM waayF maiF bpenM | example sentence | "My boy swims well, but the little girl cant swim yet." |
| ลูกชิด | luukF chitH | noun | inner seed of palm fruit |
| ลูกชิด | luukF chitH | noun | a [specific] Thai dessert |
| ลูกชิ้น | luukF chinH | noun | meat balls |
ลูกเชอร์รี่  | luukF chuuhrM reeF | noun | a cherry |
| ลูกโซ่ | luukF sohF | noun | link of a chain |
| ลูกต้นท้อชนิดหนึ่ง | luukF dtohnF thaawH chaH nitH neungL | noun | nectarine |
| ลูกตะกร้อ | luukF dtaL graawF | noun | takraw ball |
| ลูกตา | luukF dtaaM | noun | an eyeball |
| ลูกตาดำ | luukF dtaaM dahmM | noun | pupil of the eye |
| ลูกตาล | luukF dtaanM | | jelly-like seeds of the sugar palm tree |
| ลูกตาล | luukF dtaanM | noun | a Thai dish of sugar palm seeds stewed in syrup |
| ลูกเต๋า | luukF dtaoR | noun | dice |
| ลูกท้อ | luukF thaawH | noun | a peach |
| ลูกทีม | luukF theemM | noun, colloquial | staff; team; workforce; worker(s); staff member(s) |
| ลูกทุ่ง | luukF thoongF | noun | [literally, "child of the fields"] [referring to] Thai country music |
| ลูกทุเรียน | luukF thooH riianM | noun | fruit of the durian tree |
| ลูกเทนนิส | luukF thaehnM nitH | noun | tennis ball |
| ลูกธนู | luuM gohtL nuuM | noun | arrow |
| ลูกนก | luukF nohkH | noun | baby bird |
| ลูกนอกสมรส | luukF naawkF sohmR rohtH | noun | a child born out of wedlock |
| ลูกน้อง | luukF naawngH | noun, figurative | [informally referring to an] employee |
| ลูกน้องชาย | luukF naawngH chaayM | noun | nephew |
| ลูกน้องสาว | luukF naawngH saaoR | noun | neice |
| ลูกน้อยหน่า | luukF naawyH naaL | noun | custard apple, sugar apple Annona squamosa |
| ลูกนั้นไม่สุกค่ะ...ลูกนี้ดีกว่า | luukF nanH maiF sookL khaF luukF neeH deeM gwaaL | example sentence | "That one is not ripe; this is a better one." |
| ลูกนัยนตา | luukF naiM yaH naH dtaaM | noun | eye-ball |
| ลูกนี้ดีไหม? | luukF neeH deeM maiR | example sentence | "Is this a good one?" |
| ลูกบอล | luukF baawnM | noun | a ball |
| ลูกบอลชายหาด | luukF baawnM chaayM haatL | noun | beach ball |
| ลูกบาศก์ | luukF baat[k]L | adjective | cubic (for volume) |
| ลูกบาศก์เซ็นติเมตร | luukF baat[k]L senM dtiL maeht[r]F | noun | cubic centimeter |
| ลูกบาสเก็ตบอล | luukF baatL getL baawnM | | a basketball |
| ลูกบิด | luukF bitL | noun | a knob which can be operated by turning |
| ลูกบิดประตู | luukF bitL bpraL dtuuM | noun | doorknob |
