Atoll codes and island addresses in the Maldives explained
Why every Maldivian island has a letter code in front of its name, how the Thaana codes run north to south, and how house names, streets and postcodes make an address.
In the Maldives, every inhabited island is written with a short atoll code in front of its name, such as K. Dhiffushi or HA. Dhihdhoo. The code is a Thaana letter, or a pair of letters, given to each administrative atoll from north to south. Inside an island, homes are found by house name rather than by street number, so a typical address is a person, a house name, an island with its code, and a five-digit postcode.
Why the Maldives uses atoll codes
The country has around 1,200 coral islands, and many share the same handful of names. There is a Hithadhoo in Laamu and another in Addu, for example, and both turn up in official news. Writing the island name on its own would be ambiguous, so the government puts a short code for the administrative atoll in front of it.
The codes are not the natural atolls’ own names. North Malé Atoll is properly Maale Atholhu, but on paper it is simply K., for Kaafu. Even so, many people use the code names as everyday atoll names: “Baa Atoll”, “Vaavu”, “Laamu”.
Since March 2025 the spellings have been fixed. The President’s Office directed that official documents, databases, websites and social media must use the Dhivehi and English names of islands, atolls and atoll codes set out in Presidential Decree 2/2025, which lists the inhabited islands. The decree is amended when islands are merged or added, and the list is republished in the Government Gazette.
How the codes work
The codes are letters of Thaana, the script used to write Dhivehi, handed out in alphabet order from north to south. The first letter, haa, goes to the far north. Our guide to Dhivehi and the Thaana script shows the letters.
Some large natural atolls are split into two administrative atolls. Both halves share one letter, plus a second word:
- Alifu marks the northern part (Uthuruburi, “northern side”)
- Dhaalu marks the southern part (Dhekunuburi, “southern side”)
Hence pairs such as Haa Alifu and Haa Dhaalu. Ari Atoll was divided on 1 March 1984 into Alifu Alifu (North Ari) and Alifu Dhaalu (South Ari), according to the government’s atoll profiles.
The atoll codes, north to south
The table follows the government’s atoll profiles and the UK Permanent Committee on Geographical Names (2023). Short forms are those used in English by the President’s Office and the Universal Postal Union. The Roman letter is a separate series, which the UK committee notes is used for things such as boat registration.
| Short form | Code name | Official atoll name | Roman letter |
|---|---|---|---|
| HA. | Haa Alifu | Thiladhunmathi Uthuruburi | A |
| HDh. | Haa Dhaalu | Thiladhunmathi Dhekunuburi | B |
| Sh. | Shaviyani | Miladhunmadulu Uthuruburi | C |
| N. | Noonu | Miladhunmadulu Dhekunuburi | D |
| R. | Raa | Maalhosmadulu Uthuruburi | E |
| B. | Baa | Maalhosmadulu Dhekunuburi | F |
| Lh. | Lhaviyani | Faadhippolhu | G |
| K. | Kaafu | Maale Atholhu | H |
| AA. | Alifu Alifu | Ari Atholhu Uthuruburi | U |
| ADh. | Alifu Dhaalu | Ari Atholhu Dhekunuburi | I |
| V. | Vaavu | Felidhu Atholhu | J |
| M. | Meemu | Mulakatholhu | K |
| F. | Faafu | Nilandhe Atholhu Uthuruburi | L |
| Dh. | Dhaalu | Nilandhe Atholhu Dhekunuburi | M |
| Th. | Thaa | Kolhumadulu | N |
| L. | Laamu | Hahdhunmathi | O |
| GA. | Gaafu Alifu | Huvadhu Atholhu Uthuruburi | P |
| GDh. | Gaafu Dhaalu | Huvadhu Atholhu Dhekunuburi | Q |
| Gn. | Gnaviyani | Fuvahmulah | R |
| S. | Seenu | Addu Atholhu | S |
A few things that catch people out:
- The two letter systems do not match. Kaafu (K.) is H in the Roman series, and the Roman K is Meemu.
- Dhaalu appears twice. It is a whole atoll (Dh., the south of Nilandhe Atoll) and also the “south” half of split atolls (HDh., ADh., GDh.).
- Alifu Alifu is not a typo. North Ari takes the letter alifu, then “Alifu” again for north.
- Cities sit alongside the atolls. Malé City (Malé, Villimalé, Hulhulé and Hulhumalé) is run separately from Kaafu, though it lies in the same atoll. Addu is also a city, yet its islands are still written with S., as in S. Hithadhoo. See our guides to Malé and Addu City.
For what each atoll is like to visit, see our Maldives atolls guide.
How island names are written
The pattern is code, full stop, island: K. Dhiffushi, AA. Rasdhoo, L. Gan. Government releases write it this way, for example “HA. Vashafaru” and “R. Un’goofaaru” (March 2026). You will also see longer forms such as “Dhiffushi, Kaafu Atoll” or “Dhiffushi, North Malé Atoll”, all meaning the same place.
Spellings vary because Dhivehi is romanised in more than one way. Doubled vowels (aa, ee, oo) mark long sounds, and some names carry an apostrophe. Fuvahmulah is the usual spelling, though strict romanisation gives Fuvammulah. The decree fixes one official English spelling per inhabited island, so government sources should agree even when signs and maps do not.
Where travellers see the codes
- Ferry schedules. Routes and boards often list islands with their code. See our public ferries guide.
- Addresses. Accommodation addresses and island council names usually include the code.
- News and notices. Government projects and island news are usually headed “K. Island” or similar.
- ID cards. In Malé City, neighbourhoods are shortened to their first letter: Henveiru (H), Maafannu (M), Galolhu (G), Machchangolhi (M) and Villimalé (V). Since February 2025 Hulhumalé has been HM on ID cards, at Malé City Council’s request (as reported by Edition).
Our own island is written K. Dhiffushi, on the eastern rim of North Malé Atoll. The North Malé Atoll guide covers its neighbours, and the island map shows the island itself.
House names, not house numbers
On most islands, homes are known by name, not number. Official registers list addresses as house name, island and atoll, and that is how most Maldivians give their address. A house name is unique within its island but may repeat elsewhere, which is another reason the island and code always follow it. Our guide to Maldivian names explains how house names sit alongside personal names.
Streets: magu, goalhi and higun
Malé, Hulhumalé and larger islands have named streets; on small local islands the house name and island are usually enough. Three street words come up often:
- Magu means road or way. It is used for main streets, such as Majeedhee Magu in Malé.
- Goalhi means a lane or narrow street (Maniku’s Dhivehi etymological dictionary).
- Higun also appears in Malé street names, spelled higun or hingun in Latin script.
When Malé City Council replaced the capital’s street nameplates in 2026, Atoll Times reported spelling errors on several signs, so if a name looks odd, ask. In an address, the street follows the house name.
Postcodes
The Maldives uses five-digit postcodes, written after the island or city name. According to the Universal Postal Union’s country sheet for Maldives Post, the first two digits identify the area:
- Malé 20XXX, Villimalé 21XXX, Hulhulé 22000, Hulhumalé 23000
- Atolls numbered 01 to 20 in north-to-south order, from Haa Alifu (01XXX) southwards; Kaafu is 08XXX
Maldives Post’s head office, for example, is Malé 20026. For a specific island’s postcode, check with Maldives Post. Our guide to sending post from the Maldives covers stamps, post offices and parcels.
Putting an address together
A letter to a local island usually reads, one item per line:
1. Name of the person
2. House name (and street, if there is one)
3. Island with its atoll code, then the postcode
4. Maldives
The UPU sheet says addresses are written centred on the envelope.
Questions people ask
What does the K in K. Dhiffushi mean?
K stands for Kaafu, the administrative atoll code for North Malé Atoll. Kaafu is a letter of the Thaana alphabet, and every administrative atoll has a letter like this. Writing K. before Dhiffushi tells officials, ferry staff and postal workers exactly which island is meant, because many island names are used more than once around the country. You may also see Dhiffushi described as being in North Malé Atoll or Kaafu Atoll.
Why are atoll codes in alphabetical order from north to south?
The government handed out Thaana letters in alphabet order, starting with haa in the far north and ending with seenu in Addu, the southernmost atoll. This makes the codes easy to sort: an atoll near the start of the alphabet lies in the north, and one near the end lies in the south. Postcodes follow the same order, from 01 in Haa Alifu to 20 in Seenu.
What do Alifu and Dhaalu mean in atoll names?
When a large natural atoll is split into two administrative atolls, both halves share one code letter. A second word then shows which half is which: Alifu stands for the northern part (Uthuruburi) and Dhaalu for the southern part (Dhekunuburi). So Haa Alifu is the northern half of Thiladhunmathi and Haa Dhaalu the southern half. Ari Atoll was split this way in 1984.
Do houses in the Maldives have numbers?
Most homes on local islands are known by a house name rather than a number. The name is usually unique on its island but may be repeated elsewhere, so an address normally gives the house name, then the island and atoll code. Larger places such as Malé and Hulhumalé also use street names, and some buildings there have numbers, but house names are still widely used.
Does the Maldives have postcodes?
Yes. The Maldives uses five-digit postcodes run by Maldives Post. The first two digits identify the atoll or the part of Malé City, with atolls numbered from 01 in the north to 20 in the south. Postcodes go after the island or city name. For an exact postcode on a particular island, check with Maldives Post, because individual codes are not always listed in one public place.
Is Malé part of Kaafu Atoll?
Malé lies within the same natural atoll as the rest of North Malé, but it is administered separately as Malé City, which also includes Villimalé, Hulhulé (the airport island) and Hulhumalé. Kaafu covers the other inhabited islands of the atoll, including Dhiffushi. That is why Malé addresses use Malé postcodes beginning with 20 to 23, while Kaafu islands use codes beginning with 08.


