| 項目 |
| L |
| L.［left］ |
| ￡.［(ラ) libra（e）］ |
| L 形鋼［L-shaped steel］ |
| L 波［L wave; long wave］ |
| L 判［large size］ |
| l,l［(フ) litre］ |
| l.［length］ |
| l体, L 体 |
| LA1［laboratory automation］ |
| LA2［Lao People's Democratic Republic］ |
| LA3［Latin America］ |
| L.A.［Los Angeles］ |
| La［(ド) Lanthan］ |
| L-ADESS［Local Automated Data Editing and Switching System］ |
| LAFTA（ラフタ）［Latin American Free Trade Association］ |
| LAN（ラン）［local area network］ |
| Landsat（ランドサット）［land satellite］ |
| LAO［Lao People's Democratic Republic］ |
| LARA（ララ）［Licensed Agency for Relief of Asia］ |
| LAS［Las Vegas］ |
| LAS（ラス）洗剤［linear alkylbenzene sulfonate］ |
| LASA（ラサ）［large aperture seismic array］ |
| laser［light amplification by stimulated emission of radiation］ |
| LASH［lighter aboard ship］ |
| LAT［Republic of Latvia］ |
| LAX［Los Angeles］ |
| LB［Republic of Lebanon］ |
| lb［(ラ) libra（e）］ |
| LBA［Socialist People's Libyan Arab Jamahiriya］ |
| LBG［liquefied butane gas］ |
| LBO［leveraged buyout］ |
| LBP［laser beam printer］ |
| LBR［Republic of Liberia］ |
| LC1［landing craft］ |
| LC2［Library of Congress］ |
| LC3［light change］ |
| LC4［Saint Lucia］ |
| L/C, LC［letter of credit］ |
| LCA1［life cycle assessment］ |
| LCA2［low-cost automation］ |
| LCA3［Saint Lucia］ |
| LCC［light curtain closed］ |
| LCD［liquid crystal display］ |
| LCM［lowest（least) common multiple］ |
| LCR［least cost routing］ |
| LD1［laser diode］ |
| LD2［laser disk］ |
| LD3［learning disability］ |
| LD4［light director］ |
| LD5［(和) living＋dining］ |
| LD 法［Linz-Donawitz process］ |
| LD50［lethal dose 50］ |
| LDC［less developed country］ |
| LDDC［least developed among developing countries］ |
| LDH［lactate dehydrogenase］ |
| LDK［(和) living＋dining＋kitchen］ |
| LDL［low density lipoprotein］ |
| L-dopa［L dihydroxyphenylalanine］ |
| LDP［Liberal-Democratic Party］ |
| LDPE［low-density polyethylene］ |
| LDR［labor, delivery, recovery］ |
| LD-ROM［laser disk read-only memory］ |
| LE 細胞［lupus erythematosus cell］ |
| LEAP［light-weight exo-atmospheric projectile］ |
| LED1［Leningrad］ |
| LED2［light-emitting diode］ |
| LEO［low earth orbit］ |
| LEP［large electron positron collider］ |
| LES［Kingdom of Lesotho］ |
| LF1［left fielder］ |
| LF2［left forward］ |
| LF3［low fat］ |
| LF4［low frequency］ |
| LGA［La Guardia］ |
| LGW［London-Gatwick］ |
| LH1［Lufthansa German Airlines］ |
| LH2［luteinizing hormone］ |
| LH テープ［low-noise high-output tape］ |
| LHC［large hadron collider］ |
| LHR［London-Heathrow］ |
| LI［Principality of Liechtenstein］ |
| Li［lithium］ |
| LIB1（リブ）［liberation］ |
| LIB2［Republic of Lebanon］ |
| LIBID［London Interbank Bid Rate］ |
| LIBOR（ライボー，リボール）［London Interbank Offered Rate］ |
| LIC［low-intensity conflict］ |
| LIE［Principality of Liechtenstein］ |
| LIFFE［London International Financial Futures and Options Exchange］ |
| LIFO（ライフォ）［last-in,first-out］ |
| LIM1［Lima］ |
| LIM2［linear-induction motor］ |
| LIM3［liquid injection molding］ |
| LIPS［logical interface per second］ |
| LISA（リサ）［low input sustainable agriculture］ |
| LISP（リスプ）［list processor］ |
| LK［Democratic Socialist Republic of Sri Lanka］ |
| LL1 |
| LL2［language laboratory］ |
| LL 牛乳［(和) long-life milk］ |
| LL 住宅［long life］ |
| LL 判 |
| LLC［limited liability company］ |
| LLDC［least less-developed country］ |
| LLDPE［linear low-density polyethylene］ |
| LM1［light music］ |
| LM2［lunar module］ |
| lm［lumen］ |
| LME［London Metal Exchange］ |
| LMG［liquefied methane gas］ |
| LNG［liquefied natural gas］ |
| LO1［light open］ |
| LO2［light operator］ |
| L.O.［liaison officer］ |
| LOB［left on bases］ |
| LOCA（ロカ）［loss of coolant accident］ |
| log（ログ）［logarithm］ |
| LOGO |
| logo［logotype］ |
| loran（ロラン）［long range navigation］ |
| LP1［laser printer］ |
| LP2［line printer］ |
| LP3［linear programming］ |
| LP4［long-playing］ |
| LP スタンド |
| LPG［liquefied petroleum gas］ |
| LPGA［Ladies' Professional Golf Association］ |
| LPRP［Lao People's Revolutionary Party］ |
| LPS［lipopolysaccharide］ |
| LR［Republic of Liberia］ |
| Lr［lawrencium］ |
| LRBM［long range ballistic missile］ |
| LRCS［League of Red Cross Societies］ |
| LRT［light rail transit］ |
| LRV［light rail vehicle］ |
| LS［Kingdom of Lesotho］ |
| LSD1［limited slip differential］ |
| LSD2［lysergic acid diethylamide］ |
| LSE［London Stock Exchange］ |
| L.S.E., LSE［London School of Economics and Political Science］ |
| LSI［large-scale integrated circuit］ |
| LSS［life-support system］ |
| LST1［landing ship for tank］ |
| LST2［local standard time］ |
| LT1［local time］ |
| LT2［Republic of Lithuania］ |
| L.T.A.［Lawn Tennis Association］ |
| Ltd.［limited］ |
| LTH［luteotrophic hormone］ |
| LTLT［low temperature long time pasteurization］ |
| LTP［low temperature passivation］ |
| LTTE［Liberation Tigers of Tamil Eelam］ |
| LTU［Republic of Lithuania］ |
| LU1［Grand Duchy of Luxembourg］ |
| LU2［loudness unit］ |
| Lu［lutetium］ |
| LUX［Grand Duchy of Luxembourg］ |
| LV［Republic of Latvia］ |
| LV 値［light value］ |
| LW［left wing］ |
| LWR［light water reactor］ |
| lx［(フ) lux］ |
| LY［Socialist People's Libyan Arab Jamahiriya］ |
| .lzh |