Below is a list of philosophical writings from Ancient Greece!
Parmenides (6th - 5th Century BC)
Fragments
Heraclitus (6th - 5th Century BC)
Fragments
Xenophanes (570 - 478 BC)
Fragments
Anaxagoras (500 - 428 BC)
Fragments
Empedocles (494 - 444 BC)
Fragments
Leucippus (5th Century BC)
Fragments
Democritus (460 - 370 BC)
Fragments
Xenophon (430 - 354 BC)
Apology of Socrates
Hiero
Memorablia
Oeconomicus
Symposium
Plato (428 - 348 BC)
The Apology
Charmides
Cratylus
Critias
Crito
Euthydemus
Euthyphro
Gorgias
Hippias Major
Hippias Minor
Ion
Laches
Laws
Lysis
Menexenus
Meno
Parmenides
Phaedo
Phaedrus
Philebus
Protagoras
Republic
Sophist
Statesman (Politikos)
Symposium
Theaetetus
Timaeus
Aristotle (384 - 322 BC)
Categories (Categoriae)
Constitution of the Athenians (Athenaion Politeia)
Eudemian Ethics (Ethica Eudemia)
Generation of Animals (De Generatione Animalium)
Generation and Corruption (De Generatione et Corruptione)
History of Animals (Historia Animalium)
Metaphysics (Metaphysica)
Meteorology (Meteorologica)
Movement of Animals (De Motu Animalium)
Nicomachean Ethics (Ethica Nicomachea)
On Dreams (De Insomniis)
On Interpretation (De Interpretatione)
On Length and Shortness of Life (De Longitudine et Brevitate Vitae)
On Memory and Recollection (De Memoria et Reminiscentia)
On Parts of Animals (De Partibus Animalium)
On Plants (De Plantis) – possibly not by Aristotle
On the Heavens (De Caelo)
On the Motion of Animals (De Motu Animalium)
On the Soul (De Anima)
On Sense and the Sensed Object (De Sensu et Sensato)
On Sleep and Waking (De Somno et Vigilia)
On Sophistical Refutations (De Sophisticis Elenchis)
On the Universe (De Mundo) – authorship disputed
Parva Naturalia – a collection of short works on biology and psychology (includes works like On Dreams, On Memory, etc.)
Physics (Physica)
Poetics (Poetica)
Politics (Politica)
Posterior Analytics (Analytica Posteriora)
Prior Analytics (Analytica Priora)
Problems (Problemata) – attributed, possibly by Aristotle's school
Progression of Animals (De Incessu Animalium)
Rhetoric (Rhetorica)
Sense and Sensibilia (De Sensu et Sensibilibus) – part of Parva Naturalia
Topics (Topica)
Attributions
Banner Image, By Phanatic - Parthenon, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=82609062