ColossiansOne

Side by side, from the sources

Marduk vs Tiamat

These two are set against one another in the texts, which is itself a claim worth attributing. The founding act of the Enuma Elish.

Deity · Mesopotamian · c. 1100 BCE

Marduk

also called Bel, Merodach, Bēl, Bel-Marduk, Marutuk, Mardochaios, Merōḏaḵ, 𒀭𒀫𒌓

Splits Tiamat and builds the world from her body, and is voted fifty names and supreme authority for doing it.

Alignment
Disputed
Rank
King of the Gods
First attested
Enuma Elish · c. 1100 BCE
Named there as
Marduk
Texts naming it
3
Powers attributed
5
90attestedMesopotamian

Deity · Mesopotamian · c. 1100 BCE

Tiamat

also called Ti'amat, Ti'awath, Tiawath, Tiʾāmat

The saltwater ocean personified as the mother of the gods, split in two by Marduk to make heaven and earth.

Alignment
Disputed
Rank
Primordial Sea
First attested
Enuma Elish · c. 1100 BCE
Named there as
Tiamat
Texts naming it
2
Powers attributed
2
60attestedMesopotamian

Where do they actually overlap?

Texts naming both

Powers credited to both

Common questions

Are Marduk and Tiamat the same figure?

These two are set against one another in the texts, which is itself a claim worth attributing. The founding act of the Enuma Elish. ColossiansOne records the link rather than asserting the identity: where texts disagree about whether two names denote one figure, the disagreement is what gets shown.

Which is older, Marduk or Tiamat?

Both are first attested in the same period, around c. 1100 BCE.

Do any texts name both Marduk and Tiamat?

Yes — 1 text names both. A single text naming both figures is the strongest evidence available here that its author treated them as distinct, whatever later writers did with the pair.