| Place name | Origin & meaning | Source |
| Lae Street (Muswellbrook) | To honour one of the battle areas of W.W.2 Named when a war service loan enabled the subdivision to take place. | NMH 11.12.1976. |
| Laguna | Named by Heneage Finch ( surveyor) in 1825 when he took up his grant near Wollombi of 1,000 acres. | Hanna,C: Bandits on the Great North Road. |
| Laing Street (Newcastle) | After Ald. William Laing | F. A. Cadell (Newcastle - Streets folder) |
| Lake Macquarie | After the fifth governor of N.S.W., Lachlan Macquarie | Lake Macquarie Past & Present. |
| Lake Macquarie Road (Merewether) | Early name for Glebe Road ( portion from Blane Street, along Darby Street by way of Macquarie Street then over Glebe Hill to Lake Macquarie). | Dixon,J: History of Merewether. |
| Lake Road (Mayfield) | Portion of Rawson Street from Georgetown Road to Hanbury Street. | Gov Gaz 11.10.1909. |
| Lake Road (Merewether) | Now Darby Street Also known as Lake Macquarie Road. | Newcastle - Streets folder |
| Lake Road (Wallsend) | After the fact that it leads to Lake Macquarie. Former name for Rundle Avenue between Dorigo and Cowper Streets. | Wallsend Public School Centenary 1862 - 1962. |
| Laman Street (Cooks Hill) | Named after Thomas Laman, overseer of the A. A. Co. in the Port Stephens area. | F. A. Cadelll (Newcastle - Streets folder) |
| Lambton | After the family estate, in the north of England, of the Earl of Durham. | Social Sciences Teacher Vol13.no5.30.11.1983 |
| Lambton Road (New lambton) | Early name for St James Road. | NCC Planning Department. |
| Lambton Road (Waratah) | Early name for Traise Street from Clarence Road inn easterly direction. | Gov Gaz No 168 19.12.1975. |
| Lambton Street (Mayfield) | Early name for Braye Street from Hanbury to Rawson Streets. | NCC Planning Department. |
| Lander Street ( Beresfield) | Allegedly named so that subdivider's children wouldn't forget their English literature/science or alphabet | D. Smith, Hawthorne Street Beresfield |
| Lang Street (Kurri Kurri) | Named after John Thomas Lang, Labor Premier of NSW. | Mines, Wines & People p 197. |
| Langford Street (Newcastle) | Renamed Gibson Street in 1920's. Earlier included the portion of King St to join at National Park Street. | Newcastle - Streets folder & 1896 map AMC55/61 |
| Langley (Taree) | After William Langley, a local sawmiller. | NMH 24.12. 1953 |
| Langworth | Small hamlet on the Karuah River, 131 miles from Sydney. | Basch: Atlas of the Settled Counties. RSF 919.44/BAS 1.1B |
| Largs | Named after a locality in Ayrshire Scotland, famous for the battle of Largs fought in 1620 by J.D. Lang | RAHS Journal vol 39, pt3, 1953 p12. |
| Lauers Lane (Newcastle) | After Charles Lauer | Newcastle - Streets folder |
| Laurieton | After J.A.Laurie, an early settler. | NMH 24.12. 1953 |
| Lavender Creek (Cessnock) | Known as Black Creek because of its odour. | NMH 29.07.198? |
| Lawson Street ( Beresfield) | Allegedly named so that subdivider's children wouldn't forget their English literature/science or alphabet | D. Smith, Hawthorne Street Beresfield |
| Laycock Street (Toronto) | Surveyor for the Excelsior Land Co. | Clack,E: Early History of Toronto. |
| Leaconfield (Greta). | Named by George Wyndhamin 1827 after a place near Beverley, Yorkshire, England. | NMH 24.12. 1953 |
| Learmonth Park (Hamilton) | An area of land given by A.A.Co's superintendant F.L.Learmonth to establish a public reserve in Hamilton. | Docherty,J: Newcastle, Making of an Industrial City. |
| Learmonth Street ( Hamilton) | That portion of Alexander Street between Gordon Avenue to Stewart Avenue.Also refers to that portion of Jenner Parade between Parkway Avenue tp Kemp Street. | Gov Gaz no 86 Folio 1743 25.07.1947 |
| Lee Street (Newcastle) | After the Hon. Charles Lee | Newcastle - Streets folder |
| Lee Wharf Road | Named after Mr. Charles Lee, ex-Minister for Works | Newcastle - Streets folder |
| Legges Camp | The area where Henry Legge, game hunter, regularly camped on the eastern shore of Boolambayte Lake, just north of Bombah Point. | Garland,H: Myall Lakes p 151. |
| Lemington | Agricultural settlement on the Hunter River, lying about sixteen miles west of Singleton. Also referred to as Leamington. | Basch: Atlas of the Settled Counties. RSF919.44/BAS 1.1B |
| Lemnos Parade ( Cooks Hill) | Subdivied in the Gallipoli year 1915. After the Dardanelles campaign. | Cooks Hill Walk Trip. Fredman,L.F. |
| Lemon Tree Passage. | So named because lemon trees were found by early settlers to be growing on the point. | Map Reference Key Sheet ( Place Names Folder). |
| Lenaghans Drive (Minmi) | Named after the Lanaghan family (later known as Lenaghan)who had property on the main road from Minmi to Beresfield. | Hartley,D:Settlers of the Big Swamp p 97 |
| Les Darcy Drive (Maitland) | To honour the famous Maitland boxer Les Darcy. | MM 17.12.1987. |
| Lewinsbrook | Earlier name for Allynbrook. Date of change Oct 1879. | MM 18.10.1879. |
| Lidney | Name given to a grant of 2000 acres given to George Porter around the Millers Forest area. | Millers Forest Centenary Booklet p 13 |
| Light Street (Bar Beach) | After Ald. M. Light 1924 | Newcastle - Streets folder |
| Lilly Street )Waratah) | Portion of Prince Street from Maud Street in eaterly direction. | Gov Gaz 08.10.1918. |
| Limeburner's Bay | Named after the occupation of those convicts stationed there. Present day location is Piper Beach in Fullerton Cove. | Callen,T:Bar Safe. |
| Lindesay Street ( East Maitland) | Colonel Patrick Lindesay, was administrator of N.S.W. | MM 19.11.1964. |
| lindsay street (hamilton) | Most probably named after James Lindsay an overmen for the A.A.Co | Pemberton,P: Pure Merinos p 37 |
| Lingard Street (Merewether) | After Samuel Lingard, an old resident who held lot 25 nearly opposite Dent Street. | Dixon,J: History of Merewether. |
| Linwood | Generic names for portion of Wickham referring to locality around a residence called Linwood around the site of the Carrington bridge. | NMH 11.12. 1954 |
| Little Bourke Street (Carrington) | Scott Street from Elizabeth to Robertson Street. | NCC PLanning Department. |
| Little Denison Street (Carrington) | Thornton Street from Victoria to Cowper Street North. | NCC PLanning Department. |
| Little Edward Street (Merewether) | Name given by Dean Selwyn to a street. Due to its short length it was given this street to distinguish between Edward Street in the Burwood Estate. | NMH 02.09.1967. |
| Little Fitzroy Street (Carrington) | Portion of Marsden Street from Cowper Street South to the end. | NCC Planning Department. |
| Little George Street (Mayfield) | Early name for Albion Street | Gov Gaz No 149 20.10.1922. |
| Little Gipps Street (Carrington) | Earlier name for that portion of Mathieson Street between Elizabeth and Coe Streets. | NCC Planning Department. |
| Little Italy | Localised name for Hamilton due to the high concentration of Italian migrants in the area. | NMH 14.03.2000 p9 |
| Little Young Street (Carrington) | Rodgers Street from Elizabeth Street to the end. | NCC Planning Department. |
| Liverpool Range | Named by John Oxley in 1818 after Lord Liverpool, Premier of Great Britian in 1812-17. | NMH 24.12. 1953 |
| Livingstone Street (Merewether) | D. Livingstone was a tenant in the Burwood Estate. | C.E.Smith Dec 1966. |
| Llewellyn Street (Merewether) | Could have been named after an early tenant called Thomas Llewellyn or after John Llewellyn Morgan. | C.E.Smith Dec 1966. |
| Llewellyn Street Reserve (Merewether) | could be named after Thomas Llewellyn (early tenant) or John Llewellyn Morgan (agent for A.A. Co., tenant & manager or Newcastle Coal & Copper Co.). | "Some street names of Merewether" - C.E. Smith p. 3 |
| Lloyd George Street (Tanilba Bay) | Named after the British WW1 Leader. | Port Stephens Examiner 26.04.1989 |
| Lloyd Reserve (Merewether) | Named after E.L. Lloyd | Dixon,J;History of Merewether |
| Lloyd Street (Merewether) | After Alderman David Lloyd, senior, a former mayor of Merewether Council. | Dixon,J: History of Merewether. |
| Lloyd Street Reserve (Merewether) | Named after David Lloyd who was a Mayor of Merewether | "Some street names of Merewether" C.E. Smith p. 3 |
| Lochinvar | The area took its name from the Lochinvar estate owned by Leslie Duguid when it was subdivided into small farms in 1840. | RAHS Journal vol 39, pt 3, 1953 p 12. |
| Lockyer Street (Adamstown) | Named after a member of the Merewether family.In 1886 the street was dedicated to the Merewether Council , and later extended into Adamstown. | Adamstown Public School Centenary Booklet 1877 -1977 |
| Loftus Street (Carrington) | After Sir Augustus William Frederick Spencer Loftus Governor of N.SW 1879. | Carrington Folder - Streets. |
| Loftus Street (Wallsend) | Formerly Tyrell Street between Hill and Hope Streets. | NCC Planning Department. |
| Longworth Avenue (Cardiff) | After the Longworth family who owned a large portion of land in the area. | Western Extra March 1979. |
| Longworth Street (Wallsend) | After T.Longworth, benefactor of Wallsend Hospital in the early twenties. | Wallsend Public School Centenary 1862 - 1962. |
| Lord Street (Dungog) | Named after early grantees in the region. | Bennett,C: History of Dungog,Chichester & Wangat. |
| Lorn | The name of the McDougall family estate on which the suburb of Lorn now stands, after his ancestral lands in Argylshire. | MM 21.01.1985. |
| Lostock | Village on the Paterson River. | Basch: Atlas of the Settled Counties. RSF919.44/BAS 1.1B |
| Lott Street (Carrington) | George Lott lived all his life in Carrington and was twice Mayor of Carrington. That portion of Little Young Street from Cowper Street South to the end. | Carrington Folder - Streets. |
| Lowe Street (Muswellbrook) | Named to record three generations of the bricklaying Lowe family in Muswellbrook. | Muswellbrook Chronicle 28.05.1982. |
| Lowe Street (Wallsend) | After Robert Lowe, M.L.C., early N.S.W. Colonist; given early grant of land. | Wallsend Public School Centenary 1862 - 1962. |
| Lower Branch | Earlier na,me for the Macdonald River Valley. | Mines,Wines & People p 27. |
| Lower Church Street (Newcastle) | From Union Street to Steel Streets, Newcatle. also known as Church Street West | Gov Gaz 03.11.1919 |
| Lower Heaham | Area bounded by Old Maitland Road, Shamrock St and Great Northern Railway line. | Robinson Map of Newcastle LHC912.9942/1 |
| Lower Portland Head | Early name for Wiseman's Ferry. | Hanna,C: Bandits on the Great North Road. |
| Lower Reserve (Newcastle) | Original name for Fletcher Park. | W.Swan 06.07.98 |
| Lundy Street (Wallsend) | Formerly the portion of Jubilee Road between Lake and Croudace Roads. | Gov Gaz No 1 Folio 60 08.01.1954. |
| Lymington | Early name for Cardiff after one of the mines in the area. Became confused by postal authorities with Flemington and ceased being used. | Lake Macquarie Past & Present. |
| Lynn Oval (Stockton) | In honour of Mr R.Lynn of W.A. who subsidise a cricket oval on Rawson Park. | AB1043 P 763. Stockton Council Minutes. |