Søkkmímir (or Sökkmímir in Icelandic) was a Jǫtunn who appears in two sources from Norse mythology, suggesting that he was once a well-known jötunn in Scandinavia.
In Grímnismál, stanza 50, it appears that Óðinn killed the jötunn:
- Sviðurr ok Sviðrir
- er ek hét at Søkkmímis,
- ok dulða ek þann inn alda iötun,
- þá er ek Miðviðnis vark
- ins mæra burar
- orðinn einbani.
- So. I deceived the giant
- Sokkmimir old
- As Svithur and Svithrir of yore;
- Of Mithvitnir's son
- the slayer I was
- When the famed one found his doom.
- Svidur and Svidrir
- I was at Sökkmimir's called,
- and beguiled that ancient Jötun,
- when of Midvitnir's
- renowned son
- I was the sole destroyer.
He notably appears in Ynglingatal, where subterranean abodes of giants are called Sökkmímir's halls:
- En dagskjarr
- Dúrnis niðja
- Sveigði vétti,
- þá er í stein
- enn stórgeði
- Dusla konr
- ept dvergi hljóp,
- ok salr bjartr
- þeira Sökmímis
- við jöfri gein.
- By Diurnir's elfin race,
- Who haunt the cliffs and shun day's face,
- The valiant Swegde was deceived,
- The elf's false words the king believed.
- The dauntless hero rushing on,
- Passed through the yawning mouth of stone:
- It yawned - it shut - the hero fell,
- In Saekmime's hall, where giants dwell.