The 1978 Cronulla-Sutherland Sharks season was the 12th in the club's history. They competed in the NSWRFL's 1978 Premiership and finished 2nd (out of 15). They then went on to reach the grand final against Manly-Warringah, which had to be replayed and was ultimately lost. The Sharks also competed in the 1978 Amco Cup.
For the end of season 1978 Kangaroo tour, Greg Pierce, who captained City and New South Wales during the season, was selected as vice captain. Steve Kneen and Steve Rogers also went on the tour.
Ladder TeamPldWDLPFPAPDPts1 Western Suburbs221615426288+138332 Cronulla-Sutherland221507418261+157303 Manly-Warringah221507427287+140304 Parramatta221408525306+219285 Canterbury-Bankstown221327307273+34286 Eastern Suburbs221309377280+57267 South Sydney221219298300-2258 St. George2210111367354+13219 Balmain229112337344-71910 Penrith224216206463-2571011 North Sydney224117325439-114912 Newtown Jets222119199577-3785
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