An early appearance by Chuck Norris as drug king Chuck Slaugher (really!) in the 1974 film 'Slaughter In San Francisco' (aka 'Yellow Faced Tiger)'

in is autobiography he say he never played a bad guy but we know he sort of played a bad guy in way of the dragon as well as this

A dark haired Barbara Windsor (second from the right) making her film debut as an uncredited schoolgirl in 'The Belles Of St. Trinian's' (1954)

An uncredited 14 year old Daniel Day-Lewis in 'Sunday, Bloody Sunday' (1971)

Before they were famous. Early appearances
 

I was watching Amadeus last night and as the maid was hired I was looking at her thinking I know that face but who… a 17 or 18 year Cynthia Nixon most famous for being Miranda in Sex and the City

https://i.ibb.co/RDKF6BP/IMG-2405.jpg

Excuse the literal photograph of my TV screen haha.

An uncredited Stephen Fry, during a performance of 'HMS Pinafore' in 'Chariots Of Fire' (1981)

Before he grew up to be Peter Cushing, traveled on a London bus to the South of France and wore women's clothing in Burma, Melvyn Hayes made his film debut in the Children's Film Foundation movie 'Adventures In The Hopfield' (1953)

Larry Clark's highly controversial 1995 film 'Kids' was the starting point for a number of people who would go on to be household names including Chloe Sevigny (as Jennie) and Rosario Dawson (as Ruby)

Before she was pushed out of a window, and gained the ability to see 'Ghosts', Charlotte Ritchie was an uncredited member of the Slytherin house in 'Harry Potter And The Goblet Of Fire' (2005)

Future double-Oscar winner Hilary Swank (pictured on the right) in her feature film debut as Kimberly in the original movie version of 'Buffy The Vampire Slayer' (1992)