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Sindhi Romanisation or Transliteration or Latinization of Sindhi is a system for representing the Sindhi language using the Latin script.

In Sindh, Pakistan the Sindhi language is written in modified perso-Arabic script and in India it is written in both Perso-Arabic script and Devnagari script.

Indus Roman Sindhi Script gives ability to Sindhis and would allow Sindhis all over the world to communicate with each other through one common script. The Sindhi language is traditionally written in a script derived from the Arabic script, with some modifications. Therefore, the transliteration is the process of converting text from one writing system into another, while preserving the original pronunciation. In the case of Sindhi to English transliteration, it involves converting Sindhi words written in the Sindhi script (a variant of the Arabic script) into the Latin alphabet used for writing English.

One of the primary reasons for adopting Roman script is to ease communication for Sindhi speakers who know the language but are not familiar with the traditional persio-arabic or Devnagri scripts. This group, especially in India and abroad, could benefit from the use of Roman Sindhi script because they are already familiar with the English alphabet. The shift to Roman Sindhi script would allow them to read and write Sindhi without needing to learn new, unfamiliar scripts.

To use Roman Sindhi script for Sindhi language is not about replacing the traditional Sindhi script but about addressing specific needs in a changing world. By providing an additional script option, it could increase literacy, cultural exchange, and global reach for the Sindhi language, while still preserving its rich heritage in traditional Arabic Sindhi script.

"Indus Roman Sindhi" system is different than Haleem Brohi's Roman Sindhi (Haleem Brohee jee Roman Sindhee). Indus Roman Sindhi is developed by Fayaz Soomro.^{[1][circular reference]}

Indus Roman Sindhi Sindhi: سنڌو رومن سنڌي لپي is one system for the romanisation of Sindhi.

Roman Sindhi	Sindhi
AA	(آ (اڀو الف
A	ا، ع
B	ب
BB	ٻ
C	Use C when needed
P	پ
BH	ڀ
T	ت، ط
TH	ٿ
TT	ٽ
THH	ٺ
J	ج
JH	جھ
JJ	ڄ
NJN	ڃ
CH	چ
CHH	ڇ، چھ
H	ه، ھ، ح
KH	خ
KHH	ک
D	د
DH	ڌ
DD	ڏ
D' or ddh	ڊ
DHH	ڍ
R	ر
RR	ڙ
S	س، ث، ص
SH	ش
G' or GHH	غ
F	ف
PH	ڦ
K	ڪ
Q	ق
G	گ
GG	ڳ
GH	گھ
NGN	ڱ
L	ل
M	م
N	ن
NN	ڻ
W, V	و
X	Use X when needed
Y, E, EE, I	ي
Z	ض، ذ، ز، ظ

The alphabet of persio-Arabic Sindhi script is highly context sensitive. Many of the letters of Sindhi alphabet share a common base form diacritical marks and diacritical points place either above or below.

Orthoepi/ Orthoepy	Explanation in persio-Arabic Sindhi script	Explanation in Indus Roman Sindhi Script	Explanation in English
اَ، عَ	سنڌو رومن سنڌيءَ ۾ ”ايَ“ زَبرَ لاءِ ڪتب اچي ٿي، پر ڪن صورتن ۾ ”يو“ پڻ زَبرَ لاءِ ڪتب آڻڻ جي اجازت آهي	Sindhu Roman Sindhi mein "A" zabar laaey katab achay thee, par kin sooratin mein "U" pinn zabar laaey katab aannann ji ijaazat aahay.	In Indus Roman Sindhi, "A" is used as diacritical upper mark "zabar" but in some cases, as an exception allowed to use "U" as diacritical upper mark "Zabar"
اِ، عِ	سنڌو رومن سنڌيءَ ۾ ”آءِ“ زِير لاءِ ڪتب اچي تي، پر ڪن صورتن ۾ زير لاءِ ”اِي“ پڻ ڪتب آڻڻ جي اجازت آهي	Sindhu Roman Sindhi mein "i" zer laaey katab achay thee, par kin sooratin mein "E" pinn zer laaey katab aannann ji ijaazat aahay.	In Indus Roman Sindhi, "I" is used as diacritical below mark "Zer" but in some cases, as an exception allowed to use "E" as diacritical below mark "Zer"
اُ	سنڌو رومن سنڌيءَ ۾ پيش لاءِ ”يو“ ڪتب اچي ٿي	Sindhu Roman Sindhi mein "U" peshu laaey katab achay thi.	In Indus Roman Sindhi, "U" is used as diacritical upper mark "Peshu"

From Sindhi to English transliteration, the diacritical marks (زبر, زیر, پشّو) are represented using specific vowels:

"َ" (Zabar) is typically represented by "a" in transliteration. This mark indicates a short "a" sound, like in "bhat" "ڀَت"

"ِ" (Zer) is represented by "i" in transliteration. It indicates a short "i" sound, like in "bit" or "sit."

"ُ" (Peshu) is represented by "u" in transliteration. It indicates a short "u" sound, like in "put" or "foot."

• "Alif" (Sindhi: ا), (In Romanized Sindhi: alif is "A"). For example: Ambu/Anbu (Sindhi: انبُ)

"Alif" (Sindhi: ا) is the first letter of Sindhi alphabet and it is a base letter of Sindhi alphabet. Though in Sindhi there are no vowels but the below mentioned letters and compound letters considered almost as vowels in Sindhi language and all of them are formed with the help of alif (Sindhi: ا).

Roman Sindhi Vowels/رومن سنڌي سُر/ सुर

آ	اَ	اِ	اِي	اُ	اي	اَي	او	اَو

अ आ इ ई उ ऊ

A aa i ee u oo

اُو اُ اِي اِ آ اَ

ए ऐ ओ औ अं ह

e ai o au a'n h

ھَ اَنّ اَؤ او اَي ئي

Sindhi Vowels in Roman Sindhi	a	aa	i	ee	u	oo	e	ai	au	a'n
Vowels to combine with Consonants	Ma	Maa	Mi	Mee	Mu	Moo	Me	Mai	Mau	Ma'n

In Indus Roman Sindhi, English alphabet's letter "A" stands for alif (Sindhi: ا), "AA" stants for alif mand aa (Sindhi: آ) and alif zabar (Sindhi: اَ) and ubho alif (vertical alif). ^[2]

• Consonants

(Sindhi: ب) is the second letter of Sindhi alphabet.

In Indus Roman Sindhi, English alphabet's letter "B" stands for (Sindhi: ب). For example: Badak (Sindhi: بَدَڪ)

The chart shows different sounds of "B" (Sindhi: ب)

بَو	بو	بَي	بي	بوُ	بُ	بيِ	بِ	با	بَ
BAO	BO	BAE/BAI/ BAY	BE/ BI/ BY	BOO	BU	BI/ BEE	BI/ BE	BAA	BA

^[3]

• Peculiar sounds of Sindhi language

There are six peculiar sounds in Sindhi language, four of them known as "Chaar choosinna aawaz" (Sindhi: چار چوسڻا آواز) (sounds made with back of the tongue) and two other peculiar sounds, known as Nasalization Consonant or Nasal sounds or "Noonaasik or Nikwaan (weenjann) aawaz (Phoneme)" (Sindhi: نوناسڪ يا نڪوان ”وينجڻ“ آواز).

• The chart of four peculiar Chaar choosinna aawaz sounds

ڏ	ڳ	ڄ	ٻ
dd	gg	jj	bb

• The chart of two peculiar 'Nasal sounds' or "Noonaasik or Nikwaan (weenjann) aawaz" sounds

When you make a speech sound, air usually passes through your oral cavity and comes out of your mouth. But you can also direct the flow of air through your nose, making a nasal sound.

To get the air to come out of your nose, you lower your velum. This opens up your nasal cavity and lets the air out through your nostrils. You can let air out through your nose and mouth at the same time: This makes a nasalized sound.

Nasal consonants are made by closing the mouth at specific places of articulation and opening the velum. The resulting nasal consonants are called stops because the oral cavity is closed, but air still flows out through the nasal cavity.^[4]

ڃ	ڱ
njn	ngn

This Sindhi alphabet's letter (Sindhi: ٻ) is one of four peculiar "chaar choosinna aawaz" sounds and in Indus Roman Sindhi it stands as "BB". For example: Bbakiri (Sindhi: ٻَڪِري)

• The chart shows different sounds of "BB" (Sindhi: ٻ)

ٻَو	ٻو	ٻي	ٻي	ٻوُ	ٻُ	ٻيِ	ٻِ	ٻا	ٻَ
BBAO	BBO	BBAE/ BBAI/ BBAY	BBE/ BBI/ BBY	BBOO	BBU	BBI/ BBEE	BBI	BBAA	BBA

^[5]

The Roman letter "D" is some times used as Aspirates in Roman Sindhi. For example: d', dd and some times with the combination of letter "H", suppose: dh or ddh to make peculiar sounds of Sindhi language.

ڏ	ڌ	ڍ	ڊ	د
DD	DH	DHH	D'	D

ث، س، ص	S
ثَ، سَ، صَ	SA
ثا، سا، صا	SAA

""R"" represents Sindhi letter "ر"

"RR" represents Sindhi letter "ڙ"

"ڙ" = "rr" (representing the retroflex "ṛ" sound in Sindhi, which is distinct from the regular "ر" sound)

زَبرَ Zabar (diacritical uppar mark)

In modified Sindhi script derived from Arabic alphabet	In Roman Sindhi
ھَ، حَ	ha
جھَ	jha
ڪَ، قَ	ka, ka
تَ	ta
ٽَ	tta
ٺَ	thha
رَ	ra
ڙَ	rra
رََ. ذَ، ضَ، ظَ	za

In modified Sindhi script derived Arabic alphabet	In Roman Sindhi
آ، عا	aa
ڪا، قا	kaa, qaa
ڀا	bhaa
سا، صا، ثا	saa
تا، طا	taa
ٽا	ttaa
ها، حا	haa
گا	gaa
زا، ظا، ذا، ضا	zaa

اَي، عي	ay
اَئو، عَئو	ao, uo

In modified Sindhi script derived from Arabic alphabet	In Roman Sindhi
بيَ	bay
ٻيَ	bbay
ڀيَ	bhay
تيَ	tay
ڇيَ	chhay
ڃيَ	njnay
ڱيَ	ngnay
ڙيَ	rray
ڦيَ	phay

There is a difference between transliteration and Romanisation. The present modified persio-arabic script of Sindhi language is highly context sensitive. Many of the letters of Sindhi alphabet share a common base form diacritical marks and diacritical points place either above or below (Zer, Zabar and peshu). Therefore, through transliteration, the Romanization of Sindhi words is not possible. Therefore, each and every word should be Romanized separately from persio-arabic script into Roman Sindhi script.

Haleem Brohi created his Roman Sindhi and named it "Haleem Brohi's Roman Sindhi." Although there were several minor and major errors in the "Roman Sindhi arranged by him".

Haleem Brohi made a major error in Roman Sindhi by using "TH" for the letter "ذ" or possibly "THD." Additionally, he assigned only "E" and "EE" for the letter "ي." However, "ي" should have also included "آءِ" and "واءِ" as options. There are some words that already end with "ي" and should have "آءِ"/"i" as their spelling. These words have historical significance, and we cannot change their spelling or disregard their historical status, as the World recognizes them by that spelling. Some examples are: Sindh, Sindhi, Bhittai, Karachi.

Haleem Brohi stubbornly stood by his stance and did not agree to use "آءِ"/"i" as an exception for "ي." As a result, under "Haleem Brohi's Roman Sindhi," the words (Sindh, Sindhi, and Karachi) could be transliterated as: Sinth, Sinthee, Karachee Or perhaps they could be written/transliterated as: Sinthd, Sinthdee, Karachee.

Additionally, he left some letters in Roman Sindhi with brackets ( ) as indicators, which made it very difficult to write words or sentences smoothly. These were the reasons, when "Haleem Brohi's Roman Sindhi" was introduced to the public, it did not succeed, and Sindhi people did not consider it a viable script for transliteration. Thus, there were many other significant issues in Haleem Brohi's Roman Sindhi script, which prevented it from fully meeting the needs of the Sindhi language. Therefore, it can be said that Haleem Brohi's arranged Roman Sindhi script was an incomplete script. ^[6]

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