T H E G L O B A L S TAT E O F C I T I Z E N S H I P
1.1 BIRTHRIGHT CITIZENSHIP AROUND THE WORLD: THE BIG PICTURE
Type of bir thright citizenship principle (excl provisions for foundlings) | 191 countries | 2024
Birth in territory; descent
only for birth abroad
Descent and birth in territory
17%
33
26%
Descent; birth in territory only
if otherwise stateless
30%
Only descent
27%
49
57
52
Share and number of countries with type of provision
Source: GLOBALCIT Citizenship Law Dataset, v3, mode: A01a, A01b, A02, A03b
What if a child is born abroad? All 191 countries included in
our dataset apply descent-based birthright citizenship acquisition to children born abroad to a citizen parent. Whether
a citizen can transmit their citizenship to their child born
abroad, however, depends on additional criteria in just under
half of the countries.
requirement applies. This can be a significant obstacle to becoming a citizen, compared to those who have an automatic
birthright to citizenship.
A few countries further restrict citizenship abroad to cases
where children are born to two citizen parents. This dual
restriction applies in 21 countries, such as Bhutan or Croatia. In countries such as Uzbekistan or Vietnam, citizenship
can only be passed down the generational line if the parents
are citizens or stateless. In 20 countries, citizenship can only
be transmitted abroad if the father is a citizen. We discuss
these discriminatory provisions in section 3 of this report.
In Cameroon, a child only receives citizenship if the parents are legally married. In four other countries, only the
mother can transmit her citizenship if the child is born out
of wedlock. Finally, citizenship transmission laws may discriminate against citizen parents on other grounds, such as
the parents’ race or religion (2%). Sometimes people face
multiple restrictions. For instance, a Brunei citizen father
can only pass down his citizenship to a child born abroad
if he was himself born in Brunei (or was born abroad to a
father born in Brunei) and belongs to one of the specified
indigenous groups of the Malay race. Uganda applies a list
of ethnic groups to which the citizen parent or grandparent
must belong. In Sierra Leone, the citizen parent needs to be
‘of negro African descent’ and in Liberia must be a ‘Negro
or of Negro descent’.
The most common restriction on transmitting citizenship
to children born abroad applies to those whose citizen parents were also born abroad. In one-fifth of countries, parents
born abroad cannot pass down their citizenship if their child
is also born abroad, or they can only do so after residing
for a certain period in their country of citizenship prior to
the birth of the child. For example, in Australia, two years’
residence is required. In other countries, children whose
parents were also born abroad can become citizens through
descent as long as their grandparents were born in the country (the second generation born abroad). This is the case in
Peru, where those children born abroad whose parents and
grandparents were also born abroad (the third generation
born abroad) can become citizens only by living in Peru
and making a declaration upon reaching the age of majority.
When citizenship acquisition is not automatic at birth, other
criteria may also vary. For example, in the United Kingdom,
a child born outside the UK automatically acquires British
citizenship if the citizen parent was born in the UK. If the
parent was also born abroad (and their parent was born in
the UK) but has resided in the UK for three years while the
child is a minor, the child is entitled to register as a British
citizen. If the child is over 10 years old, a ‘good character’
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