False - the ostrich holds the title to laying the largest eggs of any living animal on the planet (there are extinct animals that laid larger eggs: e.g. elephant birds of Madagascar, giant moa of New Zealand). Although sharks do lay some funky eggs, the best that we can tell, the larger of the shark eggs are roughly a shaftment in length, whereas ostrich eggs are easily a span in length.
Ostrich eggs are the largest of all eggs though they are actually the smallest eggs relative to the size of the adult bird. – on average they are 15 centimetres (5.9 in) long, 13 centimetres (5.1 in) wide, and weigh 1.4 kilograms (3.1 lb), over 20 times the weight of a chicken egg.