在现行的加拿大移民法中，只要有一人成功申请移民加拿大，其家庭成员都可以一同移民。家庭成员的定义为：配偶、同居伴侣，以及未满21周岁子女等。
配偶 Spouse
加拿大法律承认同性婚姻，但不承认一夫多妻。只要出具具有法律效应的结婚证，即可被认定为配偶关系。如果结婚证不是英文或法文的，我们可以提供翻译并进行公证。
由于目前中国不承认同性婚姻，也不会给同性夫妻发放结婚证，所以中国的同性伴侣只能前往其他国家或地区领取结婚证。比较方便的国家和地区包括：台湾、美国、加拿大、欧洲等过；大部分国家或地区允许非本国居民办理结婚登记。
同居/普通法伴侣 Common-Law Partner
在加拿大现行法律中，同性或异性双方同居一年以上，并像夫妻一样共同生活，即可被视作已经结婚。这种关系称作普通法伴侣 Common-Law Partner。与领取结婚证的夫妻一样，需要承担相应的义务与责任，并享受相同的待遇。加拿大只承认一个同居伴侣，如果在婚姻存续期内有同居伴侣，则必须证明已经分居或离婚。
同居伴侣需要通过递交IMM5409表格（Statutory Declaration of Common-Law Union），并共同宣誓证明双方认可这段关系。在递交移民申请时，通常还需要双方提供共同居住超过1年的证明。包括但不限于显示地址的：水电气账单、信用卡账单、电讯公司账单、租房合同、第三方证词等。
事实伴侣 Conjugal Partner
在没有同居也没有登记结婚的情况下，只要双方维持稳定的类似于婚姻的关系，也可以进行团聚移民。这种关系在加拿大法律中称为事实伴侣 Conjugal Partner。需要注意的是，事实伴侣与同居（普通法）伴侣有所区别。
同居伴侣在加拿大视作已经结婚，享受与配偶完全一样的待遇。事实伴侣不能和主申请人一同移民，但在另一方已经是加拿大公民或永久居民的情况下，为其申请团聚移民。
子女 Children
加拿大移民法允许子女陪同父母一起移民。在移民申请递交后（如包含省提名阶段，还包含省提名递交之后），子女的年龄增长不影响其移民资格。加拿大移民法对子女的定义如下：
- 未满22周岁，未婚也没有同居伴侣；
- 年满22周岁，但由于身体残障在22岁以前的某个时间点至今，一直靠父母自助维持生活；
父母 Parents
申请人的父母，并不是加拿大移民法中承认的家庭成员。因此，父母不能陪同申请人一起移民。家庭成员申报表中也不包括父母的信息材料。如果希望父母来加拿大团聚居住，可以申请父母团聚移民，或超级签证。
很多人搞不清楚 CIC 有关 family member 的定义
如下是 CEC guide 里面的解释,
基本适用于 CEC FSW SP WP VISITOR 类申请
对于大部分人 (20多岁已经毕业工作了) 来讲, 有点难理解的就是,
1) 父母不是 CIC 定义的 family member, family member 是作为你的 family 的一部分, 可以和你一起移民的, 父母不可以 父母最多算 additional family member
2) 你也不是你父母的 family member
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sponsorship 和难民申请, 对于 family member 的定义有所不同
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http://www.cic.gc.ca/english/information/applications/guides/5609E5.asp
Family members include ,
spouse, common-law partners and dependent children:
spouse
Refers to either of the two persons of opposite or the same sex in a legally recognized marriage.
A common-law partner
Refers to a person who is living in a conjugal relationship with another person either of the opposite sex or same sex, and has done so for a period of at least one year. A conjugal relationship exists when there is a significant degree of commitment between two people. Common-law partners must attach any documents that show they are in a committed and genuine relationship, for example evidence that they share the same home, that they support each other financially and emotionally, that they have had children together, or that they present themselves in public as a couple.
Common-law partners who are unable to live together or appear in public together because of legal or cultural restrictions in their home country may still qualify and should be included on the application. Common-law partners that meet the conditions outlined above but who have been separated for reasons beyond their control (for example, civil war or armed conflict).
Dependent children
May be the children of the principal applicant or those of his or her spouse or common-law partner.
They must:
- be under the age of 22 and not have a spouse or common-law partner; or,
- depend substantially on the financial support of a parent and have been continuously enrolled and in attendance as full-time students in a post-secondary institution accredited by the relevant government authority since before the age of 22 (or since marrying or entering into a common-law relationship, if this happened before the age of 22); or,
- depend substantially on the financial support of a parent since before the age of 22 and be unable to provide for themselves due to a medical condition.
