5 January – British soap opera series EastEnders debuts on ABC.
February – Fairfax, owners of ATN-7 & BTQ-7 purchase HSV-7 from The Herald and Weekly Times Ltd for $320 million. The move sees the replacement of most Melbourne-produced programming with networked programming from Sydney, including long-running shows such as World of Sport & sees Mal Walden sacked as newsreader. The revamped news service, read by former STW-9 newsreader Greg Pearce plunges to as low as zero in the ratings.
13 April – ABC weekday afternoon magazine series The Afternoon Show updates its schedule by airing four different programmes on five different days of the week. One show (a brand new Canadian-Scottish drama series called The Campbells) airs from Monday to Thursdays, the other (which is an Australian children's environmental series called Earthwatch now presented by David Smith) now airs only on Fridays, the next programme, a brand new sketch comedy series from Canada titled You Can't Do That on Television airs weekdays at 5:30pm and the last one includes reruns of the French-American animated series Inspector Gadget being shown weeknights at 6:00pm.
20 April – ABC comedy series The Dingo Principle broadcasts a mock interview with the Ayatollah Khomeini, which results in diplomatic tensions with Iran, including the expulsion of two Australian diplomats. Two weeks later, the ABC receives a letter of complaint from the Soviet embassy regarding a skit lampooning Russian figures Mikhail Gorbachev and Vladimir Lenin.
6 July – Reruns of the British children's television series Thomas the Tank Engine & Friends airs on the ABC for the first time. It was also the second time the series has been broadcast.
19 July – Long-running ABC music program Countdown broadcasts for the very last time ever with the final Countdown Music and Video Awards from the Sydney Entertainment Centre. In the closing, Molly Meldrum took off his trademark cowboy hat to reveal a bald head, signing off and John Farnham performed "You're the Voice".
August – New cross-media ownership rules force the sale of the Seven Network. Fairfax sells its stations to Christopher Skase's Qintex company for $780 million.
17 August – The ABC broadcasts a lineup of children's morning programmes for the 7:00am to 10:00am timeslot for the first time.
12 September – Australian gardening and lifestyle programme Burke's Backyard, endorsed by gardener Don Burke, premieres on Nine Network. It was also one of the first of the long line of prime-time “infotainment” and lifestyle programs on commercial television.
26 October – A new Australian children's television series called Kaboodle debuts on ABC.
27 December – When the new year approaches, Kerry Stokes's ownership of ADS-7 (while owning Network Ten outlets in Perth and Canberra) and TVW-7's ownership of SAS-10, result in the stations deciding to cease broadcasting under swapped callsigns and affiliations. ADS-7 becomes ADS-10 and aligns to the Ten Network and SAS-10 becomes SAS-7 and aligns to the Seven Network.
The following quote came from Seven National News reporter Alan Murrell on the 27 December 1987 edition regarding the move:
"Tonight will mark the end of the callsigns ADS-7 and SAS-10. Tomorrow, they be rebranded as ADS-10 and SAS-7. It’s the first time such a change has been made. The switch follows a media shake-up earlier this year, which left ADS in the hands of the owners of the Ten Network. Already, the cosmetic changes are being made at Strangways Terrace in Gilberton. But viewers will notice little difference. They’ll still turn the knob to Ten for Channel Ten programs, and to Seven for Seven programs.
"The only difference will be that the local personalities will be seen on different channels. So if you want to watch Steve Witterman and Caroline Ainslie reading the news tomorrow night, you simply turn the dial three positions, from Seven-to ADS-10. And it’s as easy as that."
This is a list of programs which made their premiere on an Australian television network that had previously premiered on another Australian television network. The networks involved in the switch of allegiances are predominantly both free-to-air networks or both subscription television networks. Programs that have their free-to-air/subscription television premiere, after previously premiering on the opposite platform (free-to air to subscription/subscription to free-to air) are not included. In some cases, programs may still air on the original television network. This occurs predominantly with programs shared between subscription television networks.