Kyrie Eleison / Lord have mercy

Slower Kyries
*TiS 729 / Iona (HSNW) Jesus Christ, Son of God have mercy upon us A very very simple call and response chant.
GC(II)137 Kyrie (Mass of Creation) (Haugen) Nice refrain, and the cantor verses seem quite good as well. Refrain could be used on its own. Can be sung in both English and Greek. Sound sample. Sheet music sample.
Iona (T1AU) / CH777 / MV067 / URW411 Kyrie Eleison (Bell) A simple call and response Kyrie with an optional vocal or keyboard drone.
Iona (SBL) / MV068 / G(II)405 / GC581 / MV068 On the poor, on the poor / Kyrie Guarany (Sosa) A simple challenging Kyrie from Paraguay. Sound sample. Sheet music sample.
*TiS 736 / AoV2-095 /ATOK 392 / CH776 / Iona (M&G) / UMH483 / VU946 / WoV602 / GA133 / G(II)272 / GC272 / GC(II)249 / RS 385 / SP184 / Cha298 / URW412 Kyrie Eleison (Russian / Ukrainian) Very simple and beautiful Kyrie. Often used. It is very easy to teach the bass part to the men in your congregaton (even those who think they can't sing!). Lovely sound sample. Sheet music sample.
*TiS 734 / ATOK 379 / Iona (M&G) / MV070 / GA134 / SP183 / URW410 Kyrie Eleison (Ghana / Reindorf) Another common favourite. Again, easy to teach your men the bass drone.
*TiS 735 / AoV1-002 / ATE 238 / UMH484 / VU945 / HPP573 Kyrie kyrie eleison / Kyrie 1 (Taize / Berthier) Probably the simplist Kyrie out there. There are cantored verses; it's also nice as a repetitive chant on its own. Sheet music and sound samples.
Online resource Kyrie (Bayles / Dodd) A good responsive Kyrie with heartfelt prayer. Free sheet music here.
FFS13 E te Ariki (Lord have mercy) (Render) A Maori Kyrie to a beautiful relaxed tune. Needs to be sung in Maori, and this would not be hard.
*TiS760 / GC(II)209 Kyrie Eleison (Mass of Remembrance) (Haugen) A nice simple Kyrie with or without Cantor part. Sound sample. Sheet music.
CH648 Lord have mercy (MacMillan) Simple minor key Kyrie. Written in English
MV069 Kyrie Eleison (Kervin) A very simple Kyrie chant. Sheet music and quite formal sound sample.
Music by Heart 38 Kyrie Eleison / Mercer Kyrie eleison (Haskel) A lovely layered Kyrie that can be taught during the worship service (3 layers).
Music by Heart 39 Kyrie eleison / on five notes (Haskel) Another lovely layered Kyrie that can be taught during the worship service. I think I like this one just a little better (4 layers).
Online resource Kyrie eleison (Kukuk) Adam Kukuk offers two free original Kyries on his website. I particularly like the "call and response" Kyrie. This would work really well during prayers (maybe warn the congregation beforehand that it's coming), because there is no need for anyone to look at words on a screen or a sheet of paper. Sheet music.

Energetic Kyries
ATA 119 / SFFS 2127 Come and See / Kyrie (Hamm) The first verse of this is based on the Gospel of John, but the chorus is a simple and energetic Kyrie with a lovely descant that could be used on its own.

Recorded music Kyrie Eleison (Hildegard / Braslavsky) A lovely recording of this very old Kyrie. Listen.