Not only has he carried the British flag in the absence of injured Andy Murray, Edmund has overcome searing temperatures of up to 40 degrees.
Cilic, who has 17 career titles, booked his semi-final place after world No 1 Rafael Nadal was forced to retire injured early in the fifth set of a gruelling encounter.
The Croatian world No 6 won 3-6 6-3 6-7(5) 6-2 6-0 in three hours and 47 minutes.
He reached only his second semi-final at Melbourne Park and claimed his first victory over Nadal since 2009.
Edmund and Cilic have met just once before in last year's Shanghai Masters when Cilic won in two sets.
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What TV channel is Kyle Edmund vs Marin Cilic on and can I live stream it?
Live coverage of the tennis in the UK has been exclusively taken up by Eurosport UK.
Amazon Prime members can watch the match for free by signing up for a free seven-day trial of Eurosport UK through Amazon Channels, found .
If you've never signed up for Amazon Prime before, you can get a free 30-day trial and then sign up for Eurosport for the week, also for free.
Sign up for Amazon Prime .
The Discovery-owned channel will show live action across Eurosport 1 and 2.
Who is the other Brit to have made the Australia Open final then?
Andy Murray - five times between 2010 and 2016.