1967

The Beatles – Sgt. Pepper’s Lonely Hearts Club Band (English psychedelic pop)

The Beatles – Magical Mystery Tour (English psychedelic pop, six songs from the television movie of the same name and five singles also released in 1967)

Vanilla Fudge – Vanilla Fudge (psychedelic rock, debut album consisting entirely of cover songs)

Jefferson Airplane – Surrealistic Pillow (American psychedelic rock/folk rock)

The Jimi Hendrix Experience – Are You Experienced (English-American psychedelic rock/ hard rock)

Love – Forever Changes (American baroque pop/psychedelic rock)
Pink Floyd – The Piper At The Gates Of Dawn (English psychedelic rock, debut album)

The Velvet Underground – The Velvet Underground & Nico (American art-rock, debut)

The Doors – The Doors (American psychedelic rock, debut album)

The Doors – Strange Days (American psychedelic rock)

The Who – The Who Sell Out (English rock)

The Beach Boys – Smiley Smile (American art-pop)

Frank Zappa- Lumpy Gravy (American avant-garde / jazz / musique concrete)

The Kinks – Something Else By The Kinks (English rock)

The Turtles – Happy Together (American sunshine pop/ psychedelic rock)

The Rolling Stones – Between The Buttons (English pop/rock)

The Rolling Stones – Her Satanic Majesties Request (English psychedelic rock)

The Rolling Stones – Flowers (English pop/rock, compilation of singles, previously unreleased songs, and songs cut from the US versions of Between The Buttons and Aftermath)

The Monkees – Headquarters (American pop/rock, their first album to primarily feature both their own playing and songwriting)

The Monkees – Pisces, Aquarius, Capricorn & Jones Ltd. (American pop/rock)

Sam & Dave – Soul Men (American soul)

Dantalian’s Chariot – Chariot Rising (English psychedelic rock, recorded in 1967 but not released until 1996)

The Grateful Dead – The Grateful Dead (American psychedelic rock/blues rock, debut album)

Bob Dylan – John Wesley Harding (American folk rock)

Cream – Disraeli Gears (English psychedelic rock/blues rock)

Traffic – Dear Mr. Fantasy (English psychedelic rock/jazz rock)

The Moody Blues – Days Of Future Passed (English symphonic rock/proto-prog)

Peter Paul and Mary – Album 1700 (American folk-pop)

The Byrds – Younger Than Yesterday (American folk rock/psychedelic rock)

Donovan – Mellow Yellow (Scottish folk rock)

The Mothers Of Invention – Absolutely Free (American experimental rock)

Aretha Franklin – I Never Loved A Man The Way I Love You (American soul)

Jefferson Airplane – After Bathing At Baxter’s (American psychedelic rock)

The 13^th Floor Elevators – Easter Everywhere (American psychedelic rock)

The Yardbirds – Little Games (English blues rock/psychedelic rock)

Dolly Parton – Hello, I’m Dolly (American country, debut album)

Miles Davis – Miles Smiles (American jazz)

Procol Harum – Procol Harum (English psychedelic rock/proto-prog)

Bee Gees – Bee Gees’ 1st (psychedelic pop, their first album released outside of Australia and New Zealand, but third overall)

Notes:

Drinking game: Take a drink every time the word "psychedelic" appears in this list.  Not only did some of the most well-regarded albums of the psychedelic era come out this year (e.g. Sgt. Pepper, Forever Changes), but the style had some influence on artists you wouldn't normally associate with it (Rolling Stones, Bee Gees). 
  
Top 10:

10. The Velvet Underground - The Velvet Underground & Nico
9. The Moody Blues - Days Of Future Passed
8. The Kinks - Something Else By The Kinks
7. Jefferson Airplane - Surrealistic Pillow
6. Pink Floyd - The Piper At The Gates Of Dawn
5.  The Jimi Hendrix Experience - Are You Experienced?
4. Cream - Disraeli Gears
3. Love - Forever Changes
2. The Who - The Who Sell Out
1. The Beatles - Sgt. Pepper's Lonely Hearts Club Band