Robert Mallet (24 July 1810 – 5 November 1881) was an Irish civil engineer and seismologist, often referred to as the "father of seismology". Born in Dublin, Ireland, he was educated at Trinity College, Dublin. Mallet dedicated much of his career to the scientific study of earthquakes. He developed the first seismograph in 1847, an instrument capable of recording the direction and intensity of an earthquake. Mallet also conducted extensive field studies, investigating notable earthquakes such as the Cosenza earthquake in 1857 and the Naples earthquake in 1857, for which he prepared detailed reports detailing the effects of the tremor and the local geology. His work established fundamental principles of modern seismology, including the understanding that earthquakes are waves of energy that travel through the Earth. In addition to his work in seismology, Mallet was also a respected engineer, involved in various engineering projects, including the construction of bridges and railways. He died in London in 1881.