The Aliens Restriction (Amendment) Act 1919 (9 & 10 Geo. 5. c. 92) is an Act of the Parliament of the United Kingdom originally aimed at continuing and extending the provisions of the Aliens Restriction Act 1914, and the British Nationality and Status of Aliens Act 1914 (4 & 5 Geo. 5. c. 17) and to deal with former enemy aliens after the end of the World War I. The 1914 acts were due to expire once the Paris Peace Conference formally ended the war.

It provided the authority to produce the Aliens Order 1920.

After subsequent amendment and repeal, what remains comprises section 3 on sedition and promoting industrial unrest, section 6 on the civil service, section 8 on juries, section 13 on offences and penalties, and section 16 giving the short title.

This section continued the powers of the Aliens Restriction Act 1914 for one year. Technically, it only continued section 1 of the 1914 act, but that contained all the substantive provisions of what was a two-section act. Section 1 of the 1919 act was itself repeatedly continued, one year at a time, by expiring laws continuance acts passed annually through to 1970. It was repealed by section 34(1) of, and Schedule 6 to, the Immigration Act 1971.

Section 2(1) was repealed by section 34(1) of, and Schedule 6 to, the Immigration Act 1971.

Section 2(2) was repealed by Part V of the Schedule to the Statute Law (Repeals) Act 1971.

In 1977, the Law Commission recommended that this section be repealed.

The words "a fine not exceeding level 3 on the standard scale" are prospectively substituted for the words "imprisonment for a term not exceeding three months" in section 3(2) by paragraph 153 of Schedule 32 to the Criminal Justice Act 2003.